99983239 has 4 divisors (see below), whose sum is σ = 105864624. Its totient is φ = 94101856.

The previous prime is 99983237. The next prime is 99983243. The reversal of 99983239 is 93238999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99983239 - 2¹ = 99983237 is a prime.

It is a super-2 number, since 2×99983239² = 19993296161862242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99983237) 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, 2940667 + ... + 2940700.

It is an arithmetic number, because the mean of its divisors is an integer number (26466156).

Almost surely, 2^99983239 is an apocalyptic number.

99983239 is a deficient number, since it is larger than the sum of its proper divisors (5881385).

99983239 is a wasteful number, since it uses less digits than its factorization.

99983239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881384.

The product of its digits is 944784, while the sum is 52.

The square root of 99983239 is about 9999.1619148807. The cubic root of 99983239 is about 464.1329493555.

The spelling of 99983239 in words is "ninety-nine million, nine hundred eighty-three thousand, two hundred thirty-nine".