39910221988 has 48 divisors (see below), whose sum is σ = 86011053184. Its totient is φ = 15779370240.

The previous prime is 39910221983. The next prime is 39910221991. The reversal of 39910221988 is 88912201993.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (39910221983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604528 + ... + 667288.

Almost surely, 2^39910221988 is an apocalyptic number.

It is an amenable number.

39910221988 is an abundant number, since it is smaller than the sum of its proper divisors (46100831196).

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

39910221988 is a wasteful number, since it uses less digits than its factorization.

39910221988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64532 (or 64530 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 52.

The spelling of 39910221988 in words is "thirty-nine billion, nine hundred ten million, two hundred twenty-one thousand, nine hundred eighty-eight".