999399700 has 72 divisors (see below), whose sum is σ = 2410956800. Its totient is φ = 357091200.

The previous prime is 999399683. The next prime is 999399701. The reversal of 999399700 is 7993999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999399701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27901 + ... + 52699.

Almost surely, 2^999399700 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 999399700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1205478400).

999399700 is an abundant number, since it is smaller than the sum of its proper divisors (1411557100).

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

999399700 is a wasteful number, since it uses less digits than its factorization.

999399700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24857 (or 24850 counting only the distinct ones).

The product of its (nonzero) digits is 1240029, while the sum is 55.

The square root of 999399700 is about 31613.2836004108. The cubic root of 999399700 is about 999.7998599466.

The spelling of 999399700 in words is "nine hundred ninety-nine million, three hundred ninety-nine thousand, seven hundred".