3639231 has 12 divisors (see below), whose sum is σ = 5279040. Its totient is φ = 2415840.

The previous prime is 3639217. The next prime is 3639277. The reversal of 3639231 is 1329363.

3639231 is a `hidden beast` number, since 3 + 639 + 23 + 1 = 666.

It is not a de Polignac number, because 3639231 - 2¹⁰ = 3638207 is a prime.

It is a super-2 number, since 2×3639231² = 26488004542722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3639195 and 3639204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3639211) 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, 1810 + ... + 3248.

It is an arithmetic number, because the mean of its divisors is an integer number (439920).

Almost surely, 2^3639231 is an apocalyptic number.

3639231 is a deficient number, since it is larger than the sum of its proper divisors (1639809).

3639231 is a wasteful number, since it uses less digits than its factorization.

3639231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726 (or 1723 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 3639231 is about 1907.6768594288. The cubic root of 3639231 is about 153.8166001372.

The spelling of 3639231 in words is "three million, six hundred thirty-nine thousand, two hundred thirty-one".