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9079421 = 13698417
BaseRepresentation
bin100010101000…
…101001111101
3122002021121212
4202220221331
54311020141
6522334205
7140113421
oct42505175
918067555
109079421
11514155a
12305a365
131b5b850
1412c4b81
15be52eb
hex8a8a7d

9079421 has 4 divisors (see below), whose sum is σ = 9777852. Its totient is φ = 8380992.

The previous prime is 9079387. The next prime is 9079429. The reversal of 9079421 is 1249709.

9079421 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: 1249709 = 4329063.

It can be written as a sum of positive squares in 2 ways, for example, as 1653796 + 7425625 = 1286^2 + 2725^2 .

It is a cyclic number.

It is not a de Polignac number, because 9079421 - 210 = 9078397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9079429) 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, 349196 + ... + 349221.

It is an arithmetic number, because the mean of its divisors is an integer number (2444463).

Almost surely, 29079421 is an apocalyptic number.

It is an amenable number.

9079421 is a deficient number, since it is larger than the sum of its proper divisors (698431).

9079421 is a wasteful number, since it uses less digits than its factorization.

9079421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698430.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 9079421 is about 3013.2077591829. The cubic root of 9079421 is about 208.6184517867.

The spelling of 9079421 in words is "nine million, seventy-nine thousand, four hundred twenty-one".

Divisors: 1 13 698417 9079421