39799721402 has 32 divisors (see below), whose sum is σ = 70099749120. Its totient is φ = 16589473920.

The previous prime is 39799721393. The next prime is 39799721407. The reversal of 39799721402 is 20412799793.

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1431974 + ... + 1459502.

It is an arithmetic number, because the mean of its divisors is an integer number (2190617160).

Almost surely, 2^39799721402 is an apocalyptic number.

39799721402 is a deficient number, since it is larger than the sum of its proper divisors (30300027718).

39799721402 is a wasteful number, since it uses less digits than its factorization.

39799721402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30366.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 39799721402 in words is "thirty-nine billion, seven hundred ninety-nine million, seven hundred twenty-one thousand, four hundred two".