39220981990 has 32 divisors (see below), whose sum is σ = 74324517120. Its totient is φ = 14860472544.

The previous prime is 39220981973. The next prime is 39220982027. The reversal of 39220981990 is 9918902293.

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, 1867327 + ... + 1888213.

It is an arithmetic number, because the mean of its divisors is an integer number (2322641160).

Almost surely, 2^39220981990 is an apocalyptic number.

39220981990 is a deficient number, since it is larger than the sum of its proper divisors (35103535130).

39220981990 is a wasteful number, since it uses less digits than its factorization.

39220981990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30796.

The product of its (nonzero) digits is 629856, while the sum is 52.

The spelling of 39220981990 in words is "thirty-nine billion, two hundred twenty million, nine hundred eighty-one thousand, nine hundred ninety".