499720 has 48 divisors (see below), whose sum is σ = 1251180. Its totient is φ = 178560.

The previous prime is 499717. The next prime is 499729. The reversal of 499720 is 27994.

It can be written as a sum of positive squares in 2 ways, for example, as 465124 + 34596 = 682^2 + 186^2 .

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (499729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16105 + ... + 16135.

2⁴⁹⁹⁷²⁰ is an apocalyptic number.

499720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (625590).

499720 is an abundant number, since it is smaller than the sum of its proper divisors (751460).

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

499720 is a wasteful number, since it uses less digits than its factorization.

499720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 499720 is about 706.9087635615. The cubic root of 499720 is about 79.3552340888.

The spelling of 499720 in words is "four hundred ninety-nine thousand, seven hundred twenty".