499505440 has 96 divisors (see below), whose sum is σ = 1419707520. Its totient is φ = 162238464.

The previous prime is 499505429. The next prime is 499505453. The reversal of 499505440 is 44505994.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 499505393 and 499505402.

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, 9544 + ... + 33016.

It is an arithmetic number, because the mean of its divisors is an integer number (14788620).

Almost surely, 2^499505440 is an apocalyptic number.

499505440 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 499505440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (709853760).

499505440 is an abundant number, since it is smaller than the sum of its proper divisors (920202080).

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

499505440 is a wasteful number, since it uses less digits than its factorization.

499505440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23514 (or 23506 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 499505440 is about 22349.6183412603. The cubic root of 499505440 is about 793.4387513015.

The spelling of 499505440 in words is "four hundred ninety-nine million, five hundred five thousand, four hundred forty".