99399 has 8 divisors (see below), whose sum is σ = 140400. Its totient is φ = 62336.

The previous prime is 99397. The next prime is 99401.

99399 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (99397) and next prime (99401).

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 99399 - 2¹ = 99397 is a prime.

It is a super-2 number, since 2×99399² = 19760322402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924 + ... + 1025.

It is an arithmetic number, because the mean of its divisors is an integer number (17550).

2⁹⁹³⁹⁹ is an apocalyptic number.

99399 is a deficient number, since it is larger than the sum of its proper divisors (41001).

99399 is a wasteful number, since it uses less digits than its factorization.

99399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969.

The product of its digits is 19683, while the sum is 39.

The square root of 99399 is about 315.2760695010. The cubic root of 99399 is about 46.3227149324.

The spelling of 99399 in words is "ninety-nine thousand, three hundred ninety-nine".