4090992 has 20 divisors (see below), whose sum is σ = 10568520. Its totient is φ = 1363648.

The previous prime is 4090991. The next prime is 4090997. The reversal of 4090992 is 2990904.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4090991) 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, 42567 + ... + 42662.

It is an arithmetic number, because the mean of its divisors is an integer number (528426).

Almost surely, 2^4090992 is an apocalyptic number.

It is an amenable number.

4090992 is an abundant number, since it is smaller than the sum of its proper divisors (6477528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4090992 is a wasteful number, since it uses less digits than its factorization.

4090992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85240 (or 85234 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 4090992 is about 2022.6200829617. The cubic root of 4090992 is about 159.9347650728.

The spelling of 4090992 in words is "four million, ninety thousand, nine hundred ninety-two".