3893631 has 16 divisors (see below), whose sum is σ = 6125568. Its totient is φ = 2152800.

The previous prime is 3893609. The next prime is 3893633. The reversal of 3893631 is 1363983.

It is not a de Polignac number, because 3893631 - 2⁶ = 3893567 is a prime.

It is a super-2 number, since 2×3893631² = 30320724728322, which contains 22 as substring.

3893631 is a lucky number.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 3893592 and 3893601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3893633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2340 + ... + 3641.

It is an arithmetic number, because the mean of its divisors is an integer number (382848).

Almost surely, 2^3893631 is an apocalyptic number.

3893631 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3893631 is a deficient number, since it is larger than the sum of its proper divisors (2231937).

3893631 is a wasteful number, since it uses less digits than its factorization.

3893631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6022.

The product of its digits is 11664, while the sum is 33.

The square root of 3893631 is about 1973.2285726697. The cubic root of 3893631 is about 157.3203595585.

The spelling of 3893631 in words is "three million, eight hundred ninety-three thousand, six hundred thirty-one".