495939980 has 48 divisors (see below), whose sum is σ = 1105241760. Its totient is φ = 186283008.

The previous prime is 495939979. The next prime is 495940013. The reversal of 495939980 is 89939594.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176426 + ... + 179214.

It is an arithmetic number, because the mean of its divisors is an integer number (23025870).

Almost surely, 2^495939980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 495939980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (552620880).

495939980 is an abundant number, since it is smaller than the sum of its proper divisors (609301780).

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

495939980 is a wasteful number, since it uses less digits than its factorization.

495939980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338 (or 3336 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 56.

The square root of 495939980 is about 22269.7099217749. The cubic root of 495939980 is about 791.5463915279.

The spelling of 495939980 in words is "four hundred ninety-five million, nine hundred thirty-nine thousand, nine hundred eighty".