499975440 has 320 divisors, whose sum is σ = 1748459520. Its totient is φ = 117596160.

The previous prime is 499975439. The next prime is 499975451. The reversal of 499975440 is 44579994.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7462287 + ... + 7462353.

It is an arithmetic number, because the mean of its divisors is an integer number (5463936).

Almost surely, 2^499975440 is an apocalyptic number.

499975440 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 499975440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874229760).

499975440 is an abundant number, since it is smaller than the sum of its proper divisors (1248484080).

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

499975440 is a wasteful number, since it uses less digits than its factorization.

499975440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The square root of 499975440 is about 22360.1305899585. The cubic root of 499975440 is about 793.6875302480.

The spelling of 499975440 in words is "four hundred ninety-nine million, nine hundred seventy-five thousand, four hundred forty".