39799721403 has 12 divisors (see below), whose sum is σ = 61910677920. Its totient is φ = 24492136176.

The previous prime is 39799721393. The next prime is 39799721407. The reversal of 39799721403 is 30412799793.

It is not a de Polignac number, because 39799721403 - 2²² = 39795527099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39799721403.

It is not an unprimeable number, because it can be changed into a prime (39799721407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170084163 + ... + 170084396.

It is an arithmetic number, because the mean of its divisors is an integer number (5159223160).

Almost surely, 2^39799721403 is an apocalyptic number.

39799721403 is a deficient number, since it is larger than the sum of its proper divisors (22110956517).

39799721403 is a wasteful number, since it uses less digits than its factorization.

39799721403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340168578 (or 340168575 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 54.

The spelling of 39799721403 in words is "thirty-nine billion, seven hundred ninety-nine million, seven hundred twenty-one thousand, four hundred three".