4090239 has 24 divisors (see below), whose sum is σ = 6188832. Its totient is φ = 2600640.

The previous prime is 4090237. The next prime is 4090241. The reversal of 4090239 is 9320904.

It is an interprime number because it is at equal distance from previous prime (4090237) and next prime (4090241).

It is not a de Polignac number, because 4090239 - 2¹ = 4090237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4090237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23557 + ... + 23729.

It is an arithmetic number, because the mean of its divisors is an integer number (257868).

Almost surely, 2^4090239 is an apocalyptic number.

4090239 is a deficient number, since it is larger than the sum of its proper divisors (2098593).

4090239 is a wasteful number, since it uses less digits than its factorization.

4090239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 4090239 is about 2022.4339296996. The cubic root of 4090239 is about 159.9249517832.

The spelling of 4090239 in words is "four million, ninety thousand, two hundred thirty-nine".