5631939 has 12 divisors (see below), whose sum is σ = 8289216. Its totient is φ = 3683472.

The previous prime is 5631911. The next prime is 5631943. The reversal of 5631939 is 9391365.

5631939 is a `hidden beast` number, since 563 + 1 + 93 + 9 = 666.

It is not a de Polignac number, because 5631939 - 2⁸ = 5631683 is a prime.

It is a super-3 number, since 3×5631939³ (a number of 21 digits) contains 333 as substring.

5631939 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5631949) 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, 5427 + ... + 6380.

It is an arithmetic number, because the mean of its divisors is an integer number (690768).

Almost surely, 2^5631939 is an apocalyptic number.

5631939 is a deficient number, since it is larger than the sum of its proper divisors (2657277).

5631939 is a wasteful number, since it uses less digits than its factorization.

5631939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11866 (or 11863 counting only the distinct ones).

The product of its digits is 21870, while the sum is 36.

The square root of 5631939 is about 2373.1706639009. The cubic root of 5631939 is about 177.9177649005.

The spelling of 5631939 in words is "five million, six hundred thirty-one thousand, nine hundred thirty-nine".