4491992 has 16 divisors (see below), whose sum is σ = 8789040. Its totient is φ = 2148256.

The previous prime is 4491989. The next prime is 4491997. The reversal of 4491992 is 2991944.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491997) 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, 12023 + ... + 12390.

It is an arithmetic number, because the mean of its divisors is an integer number (549315).

Almost surely, 2^4491992 is an apocalyptic number.

It is an amenable number.

4491992 is a deficient number, since it is larger than the sum of its proper divisors (4297048).

4491992 is a wasteful number, since it uses less digits than its factorization.

4491992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24442 (or 24438 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 4491992 is about 2119.4319993810. The cubic root of 4491992 is about 164.9983715787.

The spelling of 4491992 in words is "four million, four hundred ninety-one thousand, nine hundred ninety-two".