39405949752 has 64 divisors (see below), whose sum is σ = 106626240000. Its totient is φ = 12063959424.

The previous prime is 39405949733. The next prime is 39405949769. The reversal of 39405949752 is 25794950493.

It is a junction number, because it is equal to n+sod(n) for n = 39405949692 and 39405949701.

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, 255252 + ... + 379427.

It is an arithmetic number, because the mean of its divisors is an integer number (1666035000).

Almost surely, 2^39405949752 is an apocalyptic number.

It is an amenable number.

39405949752 is an abundant number, since it is smaller than the sum of its proper divisors (67220290248).

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

39405949752 is a wasteful number, since it uses less digits than its factorization.

39405949752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634900 (or 634896 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 57.

The spelling of 39405949752 in words is "thirty-nine billion, four hundred five million, nine hundred forty-nine thousand, seven hundred fifty-two".