239998999 has 8 divisors (see below), whose sum is σ = 245406672. Its totient is φ = 234624000.

The previous prime is 239998987. The next prime is 239999021. The reversal of 239998999 is 999899932.

It is a happy number.

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 239998999 - 2⁹ = 239998487 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 (239998939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6999 + ... + 22999.

It is an arithmetic number, because the mean of its divisors is an integer number (30675834).

Almost surely, 2^239998999 is an apocalyptic number.

239998999 is a deficient number, since it is larger than the sum of its proper divisors (5407673).

239998999 is a wasteful number, since it uses less digits than its factorization.

239998999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16337.

The product of its digits is 25509168, while the sum is 67.

The square root of 239998999 is about 15491.9010776599. The cubic root of 239998999 is about 621.4456372063.

The spelling of 239998999 in words is "two hundred thirty-nine million, nine hundred ninety-eight thousand, nine hundred ninety-nine".