500139090 has 128 divisors (see below), whose sum is σ = 1531699200. Its totient is φ = 114851520.

The previous prime is 500139083. The next prime is 500139103. The reversal of 500139090 is 90931005.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51999 + ... + 60861.

It is an arithmetic number, because the mean of its divisors is an integer number (11966400).

Almost surely, 2^500139090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 500139090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765849600).

500139090 is an abundant number, since it is smaller than the sum of its proper divisors (1031560110).

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

500139090 is a wasteful number, since it uses less digits than its factorization.

500139090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8909 (or 8903 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 500139090 is about 22363.7897056827. The cubic root of 500139090 is about 793.7741163648.

The spelling of 500139090 in words is "five hundred million, one hundred thirty-nine thousand, ninety".