56938439431 has 2 divisors, whose sum is σ = 56938439432. Its totient is φ = 56938439430.

The previous prime is 56938439419. The next prime is 56938439471. The reversal of 56938439431 is 13493483965.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56938439431 - 2¹⁷ = 56938308359 is a prime.

It is a super-2 number, since 2×56938439431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56938439471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28469219715 + 28469219716.

It is an arithmetic number, because the mean of its divisors is an integer number (28469219716).

Almost surely, 2^56938439431 is an apocalyptic number.

56938439431 is a deficient number, since it is larger than the sum of its proper divisors (1).

56938439431 is an equidigital number, since it uses as much as digits as its factorization.

56938439431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 55.

It can be divided in two parts, 569 and 38439431, that added together give a square (38440000 = 6200²).

The spelling of 56938439431 in words is "fifty-six billion, nine hundred thirty-eight million, four hundred thirty-nine thousand, four hundred thirty-one".