499908990 has 32 divisors (see below), whose sum is σ = 1371179520. Its totient is φ = 114264864.

The previous prime is 499908977. The next prime is 499908991. The reversal of 499908990 is 99809994.

It is a self number, because there is not a number n which added to its sum of digits gives 499908990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499908991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1190050 + ... + 1190469.

It is an arithmetic number, because the mean of its divisors is an integer number (42849360).

Almost surely, 2^499908990 is an apocalyptic number.

499908990 is an abundant number, since it is smaller than the sum of its proper divisors (871270530).

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

499908990 is a wasteful number, since it uses less digits than its factorization.

499908990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380536.

The product of its (nonzero) digits is 1889568, while the sum is 57.

The square root of 499908990 is about 22358.6446369184. The cubic root of 499908990 is about 793.6523666054.

The spelling of 499908990 in words is "four hundred ninety-nine million, nine hundred eight thousand, nine hundred ninety".