99239 has 4 divisors (see below), whose sum is σ = 113424. Its totient is φ = 85056.

The previous prime is 99233. The next prime is 99241. The reversal of 99239 is 93299.

99239 = T₁₁₂ + T₁₁₃ + ... + T₁₂₅.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93299 = 79 ⋅1181.

It is a cyclic number.

It is not a de Polignac number, because 99239 - 2⁴ = 99223 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99239.

It is not an unprimeable number, because it can be changed into a prime (99233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7082 + ... + 7095.

It is an arithmetic number, because the mean of its divisors is an integer number (28356).

2⁹⁹²³⁹ is an apocalyptic number.

99239 is a deficient number, since it is larger than the sum of its proper divisors (14185).

99239 is a wasteful number, since it uses less digits than its factorization.

99239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14184.

The product of its digits is 4374, while the sum is 32.

The square root of 99239 is about 315.0222214384. The cubic root of 99239 is about 46.2978467589.

The spelling of 99239 in words is "ninety-nine thousand, two hundred thirty-nine".