3631939 has 4 divisors (see below), whose sum is σ = 3636360. Its totient is φ = 3627520.

The previous prime is 3631937. The next prime is 3631951. The reversal of 3631939 is 9391363.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3631939 - 2¹ = 3631937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3631937) 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 3 ways as a sum of consecutive naturals, for example, 574 + ... + 2755.

It is an arithmetic number, because the mean of its divisors is an integer number (909090).

Almost surely, 2^3631939 is an apocalyptic number.

3631939 is a deficient number, since it is larger than the sum of its proper divisors (4421).

3631939 is a wasteful number, since it uses less digits than its factorization.

3631939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420.

The product of its digits is 13122, while the sum is 34.

The square root of 3631939 is about 1905.7646759241. The cubic root of 3631939 is about 153.7137963097.

The spelling of 3631939 in words is "three million, six hundred thirty-one thousand, nine hundred thirty-nine".