39963638364 has 48 divisors (see below), whose sum is σ = 100841717760. Its totient is φ = 12245042880.

The previous prime is 39963638359. The next prime is 39963638371. The reversal of 39963638364 is 46383636993.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 39963638298 and 39963638307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498652 + ... + 573219.

It is an arithmetic number, because the mean of its divisors is an integer number (2100869120).

Almost surely, 2^39963638364 is an apocalyptic number.

It is an amenable number.

39963638364 is an abundant number, since it is smaller than the sum of its proper divisors (60878079396).

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

39963638364 is a wasteful number, since it uses less digits than its factorization.

39963638364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072130 (or 1072128 counting only the distinct ones).

The product of its digits is 45349632, while the sum is 60.

The spelling of 39963638364 in words is "thirty-nine billion, nine hundred sixty-three million, six hundred thirty-eight thousand, three hundred sixty-four".