2139908 has 12 divisors (see below), whose sum is σ = 3763200. Its totient is φ = 1064712.

The previous prime is 2139877. The next prime is 2139911. The reversal of 2139908 is 8099312.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308 + ... + 2091.

It is an arithmetic number, because the mean of its divisors is an integer number (313600).

2^2139908 is an apocalyptic number.

It is an amenable number.

2139908 is a deficient number, since it is larger than the sum of its proper divisors (1623292).

2139908 is a wasteful number, since it uses less digits than its factorization.

2139908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626 (or 2624 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2139908 is about 1462.8424385422. The cubic root of 2139908 is about 128.8640275517.

The spelling of 2139908 in words is "two million, one hundred thirty-nine thousand, nine hundred eight".