99000431 has 8 divisors (see below), whose sum is σ = 105287280. Its totient is φ = 92821248.

The previous prime is 99000413. The next prime is 99000443. The reversal of 99000431 is 13400099.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99000431 is a prime.

It is a super-2 number, since 2×99000431² = 19602170676371522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99000431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (95000431) 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, 25016 + ... + 28701.

It is an arithmetic number, because the mean of its divisors is an integer number (13160910).

Almost surely, 2^99000431 is an apocalyptic number.

99000431 is a deficient number, since it is larger than the sum of its proper divisors (6286849).

99000431 is a wasteful number, since it uses less digits than its factorization.

99000431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53833.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 99000431 is about 9949.8960296075. The cubic root of 99000431 is about 462.6071722419.

The spelling of 99000431 in words is "ninety-nine million, four hundred thirty-one", and thus it is an aban number.