956405081 has 2 divisors, whose sum is σ = 956405082. Its totient is φ = 956405080.

The previous prime is 956405063. The next prime is 956405117. The reversal of 956405081 is 180504659.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556205056 + 400200025 = 23584^2 + 20005^2 .

It is a cyclic number.

It is not a de Polignac number, because 956405081 - 2⁶ = 956405017 is a prime.

It is a super-2 number, since 2×956405081² = 1829421357925233122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (956405041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478202540 + 478202541.

It is an arithmetic number, because the mean of its divisors is an integer number (478202541).

Almost surely, 2^956405081 is an apocalyptic number.

It is an amenable number.

956405081 is a deficient number, since it is larger than the sum of its proper divisors (1).

956405081 is an equidigital number, since it uses as much as digits as its factorization.

956405081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 956405081 is about 30925.7996016271. The cubic root of 956405081 is about 985.2519238469.

The spelling of 956405081 in words is "nine hundred fifty-six million, four hundred five thousand, eighty-one".