239391069 has 12 divisors (see below), whose sum is σ = 326229696. Its totient is φ = 156078552.

The previous prime is 239391049. The next prime is 239391071. The reversal of 239391069 is 960193932.

It is a happy number.

239391069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 239391069 - 2⁵ = 239391037 is a prime.

It is a super-2 number, since 2×239391069² = 114616167833925522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 239391069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239391049) 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, 183072 + ... + 184374.

It is an arithmetic number, because the mean of its divisors is an integer number (27185808).

Almost surely, 2^239391069 is an apocalyptic number.

It is an amenable number.

239391069 is a deficient number, since it is larger than the sum of its proper divisors (86838627).

239391069 is an frugal number, since it uses more digits than its factorization.

239391069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656 (or 1353 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 239391069 is about 15472.2677394104. The cubic root of 239391069 is about 620.9204754496.

The spelling of 239391069 in words is "two hundred thirty-nine million, three hundred ninety-one thousand, sixty-nine".