39139538902 has 16 divisors (see below), whose sum is σ = 58813007760. Its totient is φ = 19535227488.

The previous prime is 39139538899. The next prime is 39139538939. The reversal of 39139538902 is 20983593193.

It is a super-2 number, since 2×39139538902² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39139538902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4639224 + ... + 4647652.

It is an arithmetic number, because the mean of its divisors is an integer number (3675812985).

Almost surely, 2^39139538902 is an apocalyptic number.

39139538902 is a deficient number, since it is larger than the sum of its proper divisors (19673468858).

39139538902 is a wasteful number, since it uses less digits than its factorization.

39139538902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12255.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The spelling of 39139538902 in words is "thirty-nine billion, one hundred thirty-nine million, five hundred thirty-eight thousand, nine hundred two".