4004990 has 32 divisors (see below), whose sum is σ = 8211456. Its totient is φ = 1392160.

The previous prime is 4004989. The next prime is 4005019. The reversal of 4004990 is 994004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1739 + ... + 3321.

It is an arithmetic number, because the mean of its divisors is an integer number (256608).

Almost surely, 2^4004990 is an apocalyptic number.

4004990 is an abundant number, since it is smaller than the sum of its proper divisors (4206466).

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

4004990 is a wasteful number, since it uses less digits than its factorization.

4004990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 4004990 is about 2001.2471111784. The cubic root of 4004990 is about 158.8060871940.

Adding to 4004990 its reverse (994004), we get a palindrome (4998994).

It can be divided in two parts, 4004 and 990, that added together give a palindrome (4994).

The spelling of 4004990 in words is "four million, four thousand, nine hundred ninety".