39900201021 has 8 divisors (see below), whose sum is σ = 59111408960. Its totient is φ = 26600133996.

The previous prime is 39900201017. The next prime is 39900201031. The reversal of 39900201021 is 12010200993.

It is not a de Polignac number, because 39900201021 - 2² = 39900201017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1477785223 = 39900201021 / (3 + 9 + 9 + 0 + 0 + 2 + 0 + 1 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39900201031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738892585 + ... + 738892638.

It is an arithmetic number, because the mean of its divisors is an integer number (7388926120).

Almost surely, 2^39900201021 is an apocalyptic number.

It is an amenable number.

39900201021 is a deficient number, since it is larger than the sum of its proper divisors (19211207939).

39900201021 is a wasteful number, since it uses less digits than its factorization.

39900201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477785232 (or 1477785226 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The spelling of 39900201021 in words is "thirty-nine billion, nine hundred million, two hundred one thousand, twenty-one".