2139604 has 12 divisors (see below), whose sum is σ = 3767904. Its totient is φ = 1063064.

The previous prime is 2139583. The next prime is 2139607. The reversal of 2139604 is 4069312.

2139604 = 287² + 288² + ... + 310².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934 + ... + 2269.

It is an arithmetic number, because the mean of its divisors is an integer number (313992).

2^2139604 is an apocalyptic number.

It is an amenable number.

2139604 is a deficient number, since it is larger than the sum of its proper divisors (1628300).

2139604 is a wasteful number, since it uses less digits than its factorization.

2139604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374 (or 3372 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2139604 is about 1462.7385275571. The cubic root of 2139604 is about 128.8579250277.

The spelling of 2139604 in words is "two million, one hundred thirty-nine thousand, six hundred four".