39923863696 has 40 divisors (see below), whose sum is σ = 81439827200. Its totient is φ = 18907551360.

The previous prime is 39923863667. The next prime is 39923863729. The reversal of 39923863696 is 69636832993.

It is a happy 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, 2066401 + ... + 2085631.

It is an arithmetic number, because the mean of its divisors is an integer number (2035995680).

Almost surely, 2^39923863696 is an apocalyptic number.

It is an amenable number.

39923863696 is an abundant number, since it is smaller than the sum of its proper divisors (41515963504).

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

39923863696 is a wasteful number, since it uses less digits than its factorization.

39923863696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26087 (or 26081 counting only the distinct ones).

The product of its digits is 68024448, while the sum is 64.

The spelling of 39923863696 in words is "thirty-nine billion, nine hundred twenty-three million, eight hundred sixty-three thousand, six hundred ninety-six".