956396981 has 2 divisors, whose sum is σ = 956396982. Its totient is φ = 956396980.

The previous prime is 956396953. The next prime is 956396983. The reversal of 956396981 is 189693659.

956396981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 698280625 + 258116356 = 26425^2 + 16066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-956396981 is a prime.

It is a super-2 number, since 2×956396981² = 1829390370531828722, which contains 22 as substring.

Together with 956396983, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 956396981 parts by 43735 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (956396983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478198490 + 478198491.

It is an arithmetic number, because the mean of its divisors is an integer number (478198491).

Almost surely, 2^956396981 is an apocalyptic number.

It is an amenable number.

956396981 is a deficient number, since it is larger than the sum of its proper divisors (1).

956396981 is an equidigital number, since it uses as much as digits as its factorization.

956396981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3149280, while the sum is 56.

The square root of 956396981 is about 30925.6686427311. The cubic root of 956396981 is about 985.2491424024.

The spelling of 956396981 in words is "nine hundred fifty-six million, three hundred ninety-six thousand, nine hundred eighty-one".