390739111836 has 12 divisors (see below), whose sum is σ = 911724594312. Its totient is φ = 130246370608.

The previous prime is 390739111831. The next prime is 390739111837. The reversal of 390739111836 is 638111937093.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×390739111836² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390739111831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16280796315 + ... + 16280796338.

It is an arithmetic number, because the mean of its divisors is an integer number (75977049526).

Almost surely, 2^390739111836 is an apocalyptic number.

It is an amenable number.

390739111836 is an abundant number, since it is smaller than the sum of its proper divisors (520985482476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390739111836 is a wasteful number, since it uses less digits than its factorization.

390739111836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32561592660 (or 32561592658 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The spelling of 390739111836 in words is "three hundred ninety billion, seven hundred thirty-nine million, one hundred eleven thousand, eight hundred thirty-six".