4998990 has 32 divisors (see below), whose sum is σ = 12060576. Its totient is φ = 1326080.

The previous prime is 4998989. The next prime is 4998997. The reversal of 4998990 is 998994.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4998997) by changing a digit.

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, 8134 + ... + 8726.

It is an arithmetic number, because the mean of its divisors is an integer number (376893).

Almost surely, 2^4998990 is an apocalyptic number.

4998990 is an abundant number, since it is smaller than the sum of its proper divisors (7061586).

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

4998990 is a wasteful number, since it uses less digits than its factorization.

4998990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 4998990 is about 2235.8421232278. The cubic root of 4998990 is about 170.9860800543.

The spelling of 4998990 in words is "four million, nine hundred ninety-eight thousand, nine hundred ninety".