39393922478 has 16 divisors (see below), whose sum is σ = 59465904720. Its totient is φ = 19572005376.

The previous prime is 39393922439. The next prime is 39393922481. The reversal of 39393922478 is 87422939393.

39393922478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×39393922478² (a number of 22 digits) contains 22 as substring.

It is a congruent 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, 2056328 + ... + 2075396.

It is an arithmetic number, because the mean of its divisors is an integer number (3716619045).

Almost surely, 2^39393922478 is an apocalyptic number.

39393922478 is a deficient number, since it is larger than the sum of its proper divisors (20071982242).

39393922478 is a wasteful number, since it uses less digits than its factorization.

39393922478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25571.

The product of its digits is 17635968, while the sum is 59.

The spelling of 39393922478 in words is "thirty-nine billion, three hundred ninety-three million, nine hundred twenty-two thousand, four hundred seventy-eight".