99430812 has 108 divisors (see below), whose sum is σ = 277772040. Its totient is φ = 29966976.

The previous prime is 99430811. The next prime is 99430813. The reversal of 99430812 is 21803499.

It is an interprime number because it is at equal distance from previous prime (99430811) and next prime (99430813).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99430811) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 358818 + ... + 359094.

Almost surely, 2^99430812 is an apocalyptic number.

It is a pronic number, being equal to 9971×9972.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99430812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138886020).

99430812 is an abundant number, since it is smaller than the sum of its proper divisors (178341228).

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

99430812 is a wasteful number, since it uses less digits than its factorization.

99430812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 99430812 is about 9971.4999874643. The cubic root of 99430812 is about 463.2765616597.

The spelling of 99430812 in words is "ninety-nine million, four hundred thirty thousand, eight hundred twelve".