499980 has 48 divisors (see below), whose sum is σ = 1509984. Its totient is φ = 122880.

The previous prime is 499979. The next prime is 500009. The reversal of 499980 is 89994.

499980 = 11² + 12² + ... + 114².

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 499980.

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, 460 + ... + 1100.

It is an arithmetic number, because the mean of its divisors is an integer number (31458).

2⁴⁹⁹⁹⁸⁰ 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 499980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754992).

499980 is an abundant number, since it is smaller than the sum of its proper divisors (1010004).

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

499980 is a wasteful number, since it uses less digits than its factorization.

499980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 499980 is about 707.0926389095. The cubic root of 499980 is about 79.3689943169.

The spelling of 499980 in words is "four hundred ninety-nine thousand, nine hundred eighty".