2109992 has 16 divisors (see below), whose sum is σ = 4011540. Its totient is φ = 1040256.

The previous prime is 2109979. The next prime is 2110001. The reversal of 2109992 is 2999012.

It can be written as a sum of positive squares in 2 ways, for example, as 1865956 + 244036 = 1366^2 + 494^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223 + ... + 2390.

2^2109992 is an apocalyptic number.

It is an amenable number.

2109992 is a deficient number, since it is larger than the sum of its proper divisors (1901548).

2109992 is a wasteful number, since it uses less digits than its factorization.

2109992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692 (or 3688 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 2109992 is about 1452.5811509172. The cubic root of 2109992 is about 128.2606991392.

The spelling of 2109992 in words is "two million, one hundred nine thousand, nine hundred ninety-two".