840932403931 has 2 divisors, whose sum is σ = 840932403932. Its totient is φ = 840932403930.

The previous prime is 840932403907. The next prime is 840932403937. The reversal of 840932403931 is 139304239048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 840932403931 - 2¹⁵ = 840932371163 is a prime.

It is a super-2 number, since 2×840932403931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (840932403937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420466201965 + 420466201966.

It is an arithmetic number, because the mean of its divisors is an integer number (420466201966).

Almost surely, 2^840932403931 is an apocalyptic number.

840932403931 is a deficient number, since it is larger than the sum of its proper divisors (1).

840932403931 is an equidigital number, since it uses as much as digits as its factorization.

840932403931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 840932403931 in words is "eight hundred forty billion, nine hundred thirty-two million, four hundred three thousand, nine hundred thirty-one".