499135680 has 168 divisors, whose sum is σ = 1741712544. Its totient is φ = 131174400.

The previous prime is 499135669. The next prime is 499135699. The reversal of 499135680 is 86531994.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203260 + ... + 205700.

Almost surely, 2^499135680 is an apocalyptic number.

499135680 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 499135680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870856272).

499135680 is an abundant number, since it is smaller than the sum of its proper divisors (1242576864).

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

499135680 is a wasteful number, since it uses less digits than its factorization.

499135680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535 (or 2522 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 499135680 is about 22341.3446327655. The cubic root of 499135680 is about 793.2429213791.

The spelling of 499135680 in words is "four hundred ninety-nine million, one hundred thirty-five thousand, six hundred eighty".