3929201920 has 72 divisors (see below), whose sum is σ = 10756214784. Its totient is φ = 1347151872.

The previous prime is 3929201911. The next prime is 3929201929. The reversal of 3929201920 is 291029293.

It is an interprime number because it is at equal distance from previous prime (3929201911) and next prime (3929201929).

It is a self number, because there is not a number n which added to its sum of digits gives 3929201920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3929201929) 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, 210304 + ... + 228223.

It is an arithmetic number, because the mean of its divisors is an integer number (149391872).

Almost surely, 2^3929201920 is an apocalyptic number.

It is an amenable number.

3929201920 is an abundant number, since it is smaller than the sum of its proper divisors (6827012864).

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

3929201920 is an equidigital number, since it uses as much as digits as its factorization.

3929201920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438555 (or 438541 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 3929201920 is about 62683.3464326850. The cubic root of 3929201920 is about 1577.9798354962.

The spelling of 3929201920 in words is "three billion, nine hundred twenty-nine million, two hundred one thousand, nine hundred twenty".