999131364 has 324 divisors, whose sum is σ = 3355532544. Its totient is φ = 249480000.

The previous prime is 999131347. The next prime is 999131381. The reversal of 999131364 is 463131999.

999131364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (999131347) and next prime (999131381).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 6616689 + ... + 6616839.

Almost surely, 2^999131364 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 999131364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1677766272).

999131364 is an abundant number, since it is smaller than the sum of its proper divisors (2356401180).

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

999131364 is a wasteful number, since it uses less digits than its factorization.

999131364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 205 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 999131364 is about 31609.0392767639. The cubic root of 999131364 is about 999.7103707897.

The spelling of 999131364 in words is "nine hundred ninety-nine million, one hundred thirty-one thousand, three hundred sixty-four".