2139790 has 32 divisors (see below), whose sum is σ = 4191264. Its totient is φ = 783360.

The previous prime is 2139757. The next prime is 2139811. The reversal of 2139790 is 979312.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6817 + ... + 7123.

It is an arithmetic number, because the mean of its divisors is an integer number (130977).

2^2139790 is an apocalyptic number.

2139790 is a deficient number, since it is larger than the sum of its proper divisors (2051474).

2139790 is a wasteful number, since it uses less digits than its factorization.

2139790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 2139790 is about 1462.8021055495. The cubic root of 2139790 is about 128.8616588774.

The spelling of 2139790 in words is "two million, one hundred thirty-nine thousand, seven hundred ninety".