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8444081 = 11717211
BaseRepresentation
bin100000001101…
…100010110001
3120220000002202
4200031202301
54130202311
6500552545
7131526212
oct40154261
916800082
108444081
114848188
1229b2755
1319985c9
14119b409
15b1be3b
hex80d8b1

8444081 has 4 divisors (see below), whose sum is σ = 8452464. Its totient is φ = 8435700.

The previous prime is 8444063. The next prime is 8444083. The reversal of 8444081 is 1804448.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8444081 - 218 = 8181937 is a prime.

It is a super-2 number, since 2×84440812 = 142605007869122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8444083) 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, 2435 + ... + 4776.

It is an arithmetic number, because the mean of its divisors is an integer number (2113116).

Almost surely, 28444081 is an apocalyptic number.

It is an amenable number.

8444081 is a deficient number, since it is larger than the sum of its proper divisors (8383).

8444081 is a wasteful number, since it uses less digits than its factorization.

8444081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8382.

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 8444081 is about 2905.8700934488. The cubic root of 8444081 is about 203.6342366224.

The spelling of 8444081 in words is "eight million, four hundred forty-four thousand, eighty-one".

Divisors: 1 1171 7211 8444081