3909231 has 12 divisors (see below), whose sum is σ = 5944120. Its totient is φ = 2468880.

The previous prime is 3909221. The next prime is 3909233. The reversal of 3909231 is 1329093.

It is not a de Polignac number, because 3909231 - 2¹⁰ = 3908207 is a prime.

It is a super-2 number, since 2×3909231² = 30564174022722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3909195 and 3909204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3909233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11260 + ... + 11601.

Almost surely, 2^3909231 is an apocalyptic number.

3909231 is a deficient number, since it is larger than the sum of its proper divisors (2034889).

3909231 is a wasteful number, since it uses less digits than its factorization.

3909231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22886 (or 22883 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 3909231 is about 1977.1775337587. The cubic root of 3909231 is about 157.5301831798.

The spelling of 3909231 in words is "three million, nine hundred nine thousand, two hundred thirty-one".