239111489 has 2 divisors, whose sum is σ = 239111490. Its totient is φ = 239111488.

The previous prime is 239111459. The next prime is 239111497. The reversal of 239111489 is 984111932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134908225 + 104203264 = 11615^2 + 10208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239111489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (239111429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119555744 + 119555745.

It is an arithmetic number, because the mean of its divisors is an integer number (119555745).

Almost surely, 2^239111489 is an apocalyptic number.

It is an amenable number.

239111489 is a deficient number, since it is larger than the sum of its proper divisors (1).

239111489 is an equidigital number, since it uses as much as digits as its factorization.

239111489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 38.

The square root of 239111489 is about 15463.2302252796. The cubic root of 239111489 is about 620.6786611229.

The spelling of 239111489 in words is "two hundred thirty-nine million, one hundred eleven thousand, four hundred eighty-nine".