239708989 has 8 divisors (see below), whose sum is σ = 261416960. Its totient is φ = 218468016.

The previous prime is 239708981. The next prime is 239708999. The reversal of 239708989 is 989807932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 239708989 - 2³ = 239708981 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 (239708981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115677 + ... + 117730.

It is an arithmetic number, because the mean of its divisors is an integer number (32677120).

Almost surely, 2^239708989 is an apocalyptic number.

It is an amenable number.

239708989 is a deficient number, since it is larger than the sum of its proper divisors (21707971).

239708989 is a wasteful number, since it uses less digits than its factorization.

239708989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233499.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 239708989 is about 15482.5381963036. The cubic root of 239708989 is about 621.1952221457.

The spelling of 239708989 in words is "two hundred thirty-nine million, seven hundred eight thousand, nine hundred eighty-nine".