239097489 has 16 divisors (see below), whose sum is σ = 344131200. Its totient is φ = 147209216.

The previous prime is 239097479. The next prime is 239097497. The reversal of 239097489 is 984790932.

It is a cyclic number.

It is not a de Polignac number, because 239097489 - 2¹⁹ = 238573201 is a prime.

It is a super-2 number, since 2×239097489² = 114335218492210242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (239097409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57744 + ... + 61745.

It is an arithmetic number, because the mean of its divisors is an integer number (21508200).

Almost surely, 2^239097489 is an apocalyptic number.

239097489 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

239097489 is a deficient number, since it is larger than the sum of its proper divisors (105033711).

239097489 is a wasteful number, since it uses less digits than its factorization.

239097489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119544.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 239097489 is about 15462.7775318666. Note that the first 3 decimals coincide. The cubic root of 239097489 is about 620.6665472886. Note that the first 3 decimals are identical.

The spelling of 239097489 in words is "two hundred thirty-nine million, ninety-seven thousand, four hundred eighty-nine".