3899431008 has 72 divisors (see below), whose sum is σ = 12097108296. Its totient is φ = 1181644800.

The previous prime is 3899431001. The next prime is 3899431013. The reversal of 3899431008 is 8001349983.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899431001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612273 + ... + 618608.

It is an arithmetic number, because the mean of its divisors is an integer number (168015393).

Almost surely, 2^3899431008 is an apocalyptic number.

It is an amenable number.

3899431008 is an abundant number, since it is smaller than the sum of its proper divisors (8197677288).

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

3899431008 is a wasteful number, since it uses less digits than its factorization.

3899431008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230908 (or 1230897 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 3899431008 is about 62445.4242358878. The cubic root of 3899431008 is about 1573.9843635008.

The spelling of 3899431008 in words is "three billion, eight hundred ninety-nine million, four hundred thirty-one thousand, eight".