999113772 has 48 divisors (see below), whose sum is σ = 2389685760. Its totient is φ = 324719808.

The previous prime is 999113743. The next prime is 999113777. The reversal of 999113772 is 277311999.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (999113777) 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, 369658 + ... + 372350.

It is an arithmetic number, because the mean of its divisors is an integer number (49785120).

Almost surely, 2^999113772 is an apocalyptic number.

It is an amenable number.

999113772 is an abundant number, since it is smaller than the sum of its proper divisors (1390571988).

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

999113772 is a wasteful number, since it uses less digits than its factorization.

999113772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462 (or 3460 counting only the distinct ones).

The product of its digits is 214326, while the sum is 48.

The square root of 999113772 is about 31608.7610007099. The cubic root of 999113772 is about 999.7045033570.

The spelling of 999113772 in words is "nine hundred ninety-nine million, one hundred thirteen thousand, seven hundred seventy-two".