3139990 has 32 divisors (see below), whose sum is σ = 6672384. Its totient is φ = 1041120.

The previous prime is 3139979. The next prime is 3139991. The reversal of 3139990 is 999313.

It is a happy number.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3139991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1447 + ... + 2893.

It is an arithmetic number, because the mean of its divisors is an integer number (208512).

Almost surely, 2^3139990 is an apocalyptic number.

3139990 is the 1447-th pentagonal number.

3139990 is an abundant number, since it is smaller than the sum of its proper divisors (3532394).

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

3139990 is a wasteful number, since it uses less digits than its factorization.

3139990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 3139990 is about 1772.0016930014. The cubic root of 3139990 is about 146.4342795996.

The spelling of 3139990 in words is "three million, one hundred thirty-nine thousand, nine hundred ninety".