99399999 has 8 divisors (see below), whose sum is σ = 132612480. Its totient is φ = 66227096.

The previous prime is 99399983. The next prime is 99400009. The reversal of 99399999 is 99999399.

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

It is a cyclic number.

It is not a de Polignac number, because 99399999 - 2⁴ = 99399983 is a prime.

99399999 is a modest number, since divided by 9999 gives 9939 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99399499) 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, 3429 + ... + 14510.

It is an arithmetic number, because the mean of its divisors is an integer number (16576560).

Almost surely, 2^99399999 is an apocalyptic number.

99399999 is a deficient number, since it is larger than the sum of its proper divisors (33212481).

99399999 is a wasteful number, since it uses less digits than its factorization.

99399999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19789.

The product of its digits is 14348907, while the sum is 66.

The square root of 99399999 is about 9969.9548143409. The cubic root of 99399999 is about 463.2287011920.

The spelling of 99399999 in words is "ninety-nine million, three hundred ninety-nine thousand, nine hundred ninety-nine".