3903239 has 6 divisors (see below), whose sum is σ = 3998016. Its totient is φ = 3810660.

The previous prime is 3903233. The next prime is 3903247. The reversal of 3903239 is 9323093.

It is a happy number.

It is not a de Polignac number, because 3903239 - 2⁴ = 3903223 is a prime.

It is a super-2 number, since 2×3903239² = 30470549382242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3903233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 794 + ... + 2904.

It is an arithmetic number, because the mean of its divisors is an integer number (666336).

Almost surely, 2^3903239 is an apocalyptic number.

3903239 is a deficient number, since it is larger than the sum of its proper divisors (94777).

3903239 is an equidigital number, since it uses as much as digits as its factorization.

3903239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197 (or 2154 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 29.

The square root of 3903239 is about 1975.6616613175. The cubic root of 3903239 is about 157.4496555310.

The spelling of 3903239 in words is "three million, nine hundred three thousand, two hundred thirty-nine".