39869531356 has 24 divisors (see below), whose sum is σ = 69921460224. Its totient is φ = 19892010480.

The previous prime is 39869531327. The next prime is 39869531369. The reversal of 39869531356 is 65313596893.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 39869531356.

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, 5765541 + ... + 5772451.

It is an arithmetic number, because the mean of its divisors is an integer number (2913394176).

Almost surely, 2^39869531356 is an apocalyptic number.

It is an amenable number.

39869531356 is a deficient number, since it is larger than the sum of its proper divisors (30051928868).

39869531356 is a wasteful number, since it uses less digits than its factorization.

39869531356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9801 (or 9799 counting only the distinct ones).

The product of its digits is 15746400, while the sum is 58.

The spelling of 39869531356 in words is "thirty-nine billion, eight hundred sixty-nine million, five hundred thirty-one thousand, three hundred fifty-six".