3990454 has 16 divisors (see below), whose sum is σ = 6727392. Its totient is φ = 1761408.

The previous prime is 3990451. The next prime is 3990463. The reversal of 3990454 is 4540993.

It is a super-2 number, since 2×3990454² = 31847446252232, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2739 + ... + 3934.

It is an arithmetic number, because the mean of its divisors is an integer number (420462).

Almost surely, 2^3990454 is an apocalyptic number.

3990454 is a deficient number, since it is larger than the sum of its proper divisors (2736938).

3990454 is a wasteful number, since it uses less digits than its factorization.

3990454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 3990454 is about 1997.6120744529. The cubic root of 3990454 is about 158.6137268558.

It can be divided in two parts, 3990 and 454, that added together give a palindrome (4444).

The spelling of 3990454 in words is "three million, nine hundred ninety thousand, four hundred fifty-four".