999999264 has 48 divisors (see below), whose sum is σ = 2863637280. Its totient is φ = 303029760.

The previous prime is 999999229. The next prime is 999999323. The reversal of 999999264 is 462999999.

999999264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 999999195 and 999999204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472429 + ... + 474540.

It is an arithmetic number, because the mean of its divisors is an integer number (59659110).

Almost surely, 2^999999264 is an apocalyptic number.

It is an amenable number.

999999264 is an abundant number, since it is smaller than the sum of its proper divisors (1863638016).

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

999999264 is a wasteful number, since it uses less digits than its factorization.

999999264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946993 (or 946985 counting only the distinct ones).

The product of its digits is 25509168, while the sum is 66.

The square root of 999999264 is about 31622.7649644999. The cubic root of 999999264 is about 999.9997546666. Note that the first 3 decimals are identical.

The spelling of 999999264 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, two hundred sixty-four".