239887998 has 24 divisors (see below), whose sum is σ = 594008688. Its totient is φ = 68539392.

The previous prime is 239887997. The next prime is 239888009. The reversal of 239887998 is 899788932.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239887997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 951811 + ... + 952062.

It is an arithmetic number, because the mean of its divisors is an integer number (24750362).

Almost surely, 2^239887998 is an apocalyptic number.

239887998 is an abundant number, since it is smaller than the sum of its proper divisors (354120690).

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

239887998 is a wasteful number, since it uses less digits than its factorization.

239887998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903888 (or 1903885 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 63.

The square root of 239887998 is about 15488.3181139851. The cubic root of 239887998 is about 621.3498149669.

The spelling of 239887998 in words is "two hundred thirty-nine million, eight hundred eighty-seven thousand, nine hundred ninety-eight".