3899077920 has 144 divisors (see below), whose sum is σ = 13363858872. Its totient is φ = 1035202560.

The previous prime is 3899077909. The next prime is 3899077937. The reversal of 3899077920 is 297709983.

It can be written as a sum of positive squares in 4 ways, for example, as 1593925776 + 2305152144 = 39924^2 + 48012^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329710 + ... + 341330.

Almost surely, 2^3899077920 is an apocalyptic number.

3899077920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3899077920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6681929436).

3899077920 is an abundant number, since it is smaller than the sum of its proper divisors (9464780952).

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

3899077920 is a wasteful number, since it uses less digits than its factorization.

3899077920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11875 (or 11864 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The square root of 3899077920 is about 62442.5969991640. The cubic root of 3899077920 is about 1573.9368547091.

The spelling of 3899077920 in words is "three billion, eight hundred ninety-nine million, seventy-seven thousand, nine hundred twenty".