999899076 has 24 divisors (see below), whose sum is σ = 2545197984. Its totient is φ = 302999680.

The previous prime is 999899053. The next prime is 999899077. The reversal of 999899076 is 670998999.

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 = 999898998 and 999899016.

It is not an unprimeable number, because it can be changed into a prime (999899077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3787365 + ... + 3787628.

It is an arithmetic number, because the mean of its divisors is an integer number (106049916).

Almost surely, 2^999899076 is an apocalyptic number.

It is an amenable number.

999899076 is an abundant number, since it is smaller than the sum of its proper divisors (1545298908).

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

999899076 is a wasteful number, since it uses less digits than its factorization.

999899076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7575011 (or 7575009 counting only the distinct ones).

The product of its (nonzero) digits is 19840464, while the sum is 66.

The square root of 999899076 is about 31621.1808128666. The cubic root of 999899076 is about 999.9663575349.

The spelling of 999899076 in words is "nine hundred ninety-nine million, eight hundred ninety-nine thousand, seventy-six".