99388399 has 8 divisors (see below), whose sum is σ = 109797120. Its totient is φ = 89208600.

The previous prime is 99388363. The next prime is 99388439.

99388399 is nontrivially palindromic in base 10.

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 99388399 - 2⁹ = 99387887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99388309) 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, 56317 + ... + 58054.

It is an arithmetic number, because the mean of its divisors is an integer number (13724640).

Almost surely, 2^99388399 is an apocalyptic number.

99388399 is a deficient number, since it is larger than the sum of its proper divisors (10408721).

99388399 is a wasteful number, since it uses less digits than its factorization.

99388399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114461.

The product of its digits is 3779136, while the sum is 58.

The square root of 99388399 is about 9969.3730494951. The cubic root of 99388399 is about 463.2106808632.

The spelling of 99388399 in words is "ninety-nine million, three hundred eighty-eight thousand, three hundred ninety-nine".