239998000 has 80 divisors (see below), whose sum is σ = 633129120. Its totient is φ = 87264000.

The previous prime is 239997991. The next prime is 239998019. The reversal of 239998000 is 899932.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16546 + ... + 27454.

It is an arithmetic number, because the mean of its divisors is an integer number (7914114).

Almost surely, 2^239998000 is an apocalyptic number.

239998000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239998000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316564560).

239998000 is an abundant number, since it is smaller than the sum of its proper divisors (393131120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

239998000 is a wasteful number, since it uses less digits than its factorization.

239998000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10943 (or 10927 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 239998000 is about 15491.8688349728. The cubic root of 239998000 is about 621.4447749457. Note that the first 3 decimals are identical.

The spelling of 239998000 in words is "two hundred thirty-nine million, nine hundred ninety-eight thousand".