239684091 has 8 divisors (see below), whose sum is σ = 319656720. Its totient is φ = 159750432.

The previous prime is 239684087. The next prime is 239684117. The reversal of 239684091 is 190486932.

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

It is not a de Polignac number, because 239684091 - 2² = 239684087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (239684041) 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, 10801 + ... + 24413.

It is an arithmetic number, because the mean of its divisors is an integer number (39957090).

Almost surely, 2^239684091 is an apocalyptic number.

239684091 is a deficient number, since it is larger than the sum of its proper divisors (79972629).

239684091 is a wasteful number, since it uses less digits than its factorization.

239684091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19485.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 239684091 is about 15481.7341082968. The cubic root of 239684091 is about 621.1737140465.

The spelling of 239684091 in words is "two hundred thirty-nine million, six hundred eighty-four thousand, ninety-one".