3139855400 has 96 divisors (see below), whose sum is σ = 7977614400. Its totient is φ = 1139788800.

The previous prime is 3139855391. The next prime is 3139855423. The reversal of 3139855400 is 45589313.

It is a happy number.

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, 2021024 + ... + 2022576.

It is an arithmetic number, because the mean of its divisors is an integer number (83100150).

Almost surely, 2^3139855400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3139855400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3988807200).

3139855400 is an abundant number, since it is smaller than the sum of its proper divisors (4837759000).

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

3139855400 is a wasteful number, since it uses less digits than its factorization.

3139855400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499 (or 2490 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 3139855400 is about 56034.4126408049. The cubic root of 3139855400 is about 1464.3218720059.

The spelling of 3139855400 in words is "three billion, one hundred thirty-nine million, eight hundred fifty-five thousand, four hundred".