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980623841 = 1098996549
BaseRepresentation
bin111010011100110…
…010000111100001
32112100012212000112
4322130302013201
54002014430331
6241150101105
733205110431
oct7234620741
92470185015
10980623841
1146359a22a
122344aa795
131282149c2
14943462c1
155b15532b
hex3a7321e1

980623841 has 4 divisors (see below), whose sum is σ = 989620500. Its totient is φ = 971627184.

The previous prime is 980623823. The next prime is 980623867. The reversal of 980623841 is 148326089.

980623841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 148326089 = 389381301.

It can be written as a sum of positive squares in 2 ways, for example, as 818188816 + 162435025 = 28604^2 + 12745^2 .

It is a cyclic number.

It is not a de Polignac number, because 980623841 - 210 = 980622817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (980623871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4498166 + ... + 4498383.

It is an arithmetic number, because the mean of its divisors is an integer number (247405125).

Almost surely, 2980623841 is an apocalyptic number.

It is an amenable number.

980623841 is a deficient number, since it is larger than the sum of its proper divisors (8996659).

980623841 is a wasteful number, since it uses less digits than its factorization.

980623841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8996658.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 980623841 is about 31314.9140346896. The cubic root of 980623841 is about 993.4991103463.

The spelling of 980623841 in words is "nine hundred eighty million, six hundred twenty-three thousand, eight hundred forty-one".

Divisors: 1 109 8996549 980623841