4990990 has 8 divisors (see below), whose sum is σ = 8983800. Its totient is φ = 1996392.

The previous prime is 4990981. The next prime is 4991009. The reversal of 4990990 is 990994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249540 + ... + 249559.

It is an arithmetic number, because the mean of its divisors is an integer number (1122975).

Almost surely, 2^4990990 is an apocalyptic number.

4990990 is a deficient number, since it is larger than the sum of its proper divisors (3992810).

4990990 is a wasteful number, since it uses less digits than its factorization.

4990990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499106.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 4990990 is about 2234.0523718123. The cubic root of 4990990 is about 170.8948203546.

The spelling of 4990990 in words is "four million, nine hundred ninety thousand, nine hundred ninety".