499908989 has 16 divisors (see below), whose sum is σ = 525571200. Its totient is φ = 474876864.

The previous prime is 499908977. The next prime is 499908991. The reversal of 499908989 is 989809994.

It is a cyclic number.

It is not a de Polignac number, because 499908989 - 2²⁸ = 231473533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499908389) 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, 527414 + ... + 528360.

It is an arithmetic number, because the mean of its divisors is an integer number (32848200).

Almost surely, 2^499908989 is an apocalyptic number.

It is an amenable number.

499908989 is a deficient number, since it is larger than the sum of its proper divisors (25662211).

499908989 is a wasteful number, since it uses less digits than its factorization.

499908989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252.

The product of its (nonzero) digits is 15116544, while the sum is 65.

The square root of 499908989 is about 22358.6446145557. The cubic root of 499908989 is about 793.6523660762.

The spelling of 499908989 in words is "four hundred ninety-nine million, nine hundred eight thousand, nine hundred eighty-nine".