2138992 has 20 divisors (see below), whose sum is σ = 4242040. Its totient is φ = 1044288.

The previous prime is 2138989. The next prime is 2138999. The reversal of 2138992 is 2998312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138999) 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, 867 + ... + 2242.

It is an arithmetic number, because the mean of its divisors is an integer number (212102).

2^2138992 is an apocalyptic number.

It is an amenable number.

2138992 is a deficient number, since it is larger than the sum of its proper divisors (2103048).

2138992 is a wasteful number, since it uses less digits than its factorization.

2138992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160 (or 3154 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 2138992 is about 1462.5293159455. The cubic root of 2138992 is about 128.8456379300.

The spelling of 2138992 in words is "two million, one hundred thirty-eight thousand, nine hundred ninety-two".