4004490 has 32 divisors (see below), whose sum is σ = 10984320. Its totient is φ = 915264.

The previous prime is 4004489. The next prime is 4004509. The reversal of 4004490 is 944004.

It is a happy number.

4004490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9325 + ... + 9744.

It is an arithmetic number, because the mean of its divisors is an integer number (343260).

Almost surely, 2^4004490 is an apocalyptic number.

4004490 is an abundant number, since it is smaller than the sum of its proper divisors (6979830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4004490 is a wasteful number, since it uses less digits than its factorization.

4004490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19086.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4004490 is about 2001.1221851751. The cubic root of 4004490 is about 158.7994782430.

Adding to 4004490 its reverse (944004), we get a palindrome (4948494).

The spelling of 4004490 in words is "four million, four thousand, four hundred ninety".