999508464 has 80 divisors (see below), whose sum is σ = 2909456640. Its totient is φ = 328466880.

The previous prime is 999508463. The next prime is 999508483. The reversal of 999508464 is 464805999.

999508464 is a `hidden beast` number, since 9 + 99 + 508 + 46 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 999508464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999508463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14379 + ... + 46965.

It is an arithmetic number, because the mean of its divisors is an integer number (36368208).

Almost surely, 2^999508464 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 999508464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1454728320).

999508464 is an abundant number, since it is smaller than the sum of its proper divisors (1909948176).

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

999508464 is a wasteful number, since it uses less digits than its factorization.

999508464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32675 (or 32663 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 999508464 is about 31615.0037798511. The cubic root of 999508464 is about 999.8361278140.

The spelling of 999508464 in words is "nine hundred ninety-nine million, five hundred eight thousand, four hundred sixty-four".