995959931 has 2 divisors, whose sum is σ = 995959932. Its totient is φ = 995959930.

The previous prime is 995959859. The next prime is 995959933. The reversal of 995959931 is 139959599.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 995959931 - 2¹⁰ = 995958907 is a prime.

It is a super-2 number, since 2×995959931² = 1983872368315049522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 995959933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (995959933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497979965 + 497979966.

It is an arithmetic number, because the mean of its divisors is an integer number (497979966).

Almost surely, 2^995959931 is an apocalyptic number.

995959931 is a deficient number, since it is larger than the sum of its proper divisors (1).

995959931 is an equidigital number, since it uses as much as digits as its factorization.

995959931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4428675, while the sum is 59.

The square root of 995959931 is about 31558.8328523094. The cubic root of 995959931 is about 998.6514926787.

The spelling of 995959931 in words is "nine hundred ninety-five million, nine hundred fifty-nine thousand, nine hundred thirty-one".