938866879 has 2 divisors, whose sum is σ = 938866880. Its totient is φ = 938866878.

The previous prime is 938866853. The next prime is 938866927. The reversal of 938866879 is 978668839.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 938866879 - 2¹⁵ = 938834111 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 938866879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (938866829) 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, 469433439 + 469433440.

It is an arithmetic number, because the mean of its divisors is an integer number (469433440).

Almost surely, 2^938866879 is an apocalyptic number.

938866879 is a deficient number, since it is larger than the sum of its proper divisors (1).

938866879 is an equidigital number, since it uses as much as digits as its factorization.

938866879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31352832, while the sum is 64.

The square root of 938866879 is about 30640.9346952732. The cubic root of 938866879 is about 979.1923371193.

It can be divided in two parts, 9388 and 66879, that added together give a palindrome (76267).

The spelling of 938866879 in words is "nine hundred thirty-eight million, eight hundred sixty-six thousand, eight hundred seventy-nine".