239971079 has 2 divisors, whose sum is σ = 239971080. Its totient is φ = 239971078.

The previous prime is 239971033. The next prime is 239971097. The reversal of 239971079 is 970179932.

Together with next prime (239971097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 239971079 - 2¹⁶ = 239905543 is a prime.

It is a super-2 number, since 2×239971079² = 115172237512848482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239971379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119985539 + 119985540.

It is an arithmetic number, because the mean of its divisors is an integer number (119985540).

Almost surely, 2^239971079 is an apocalyptic number.

239971079 is a deficient number, since it is larger than the sum of its proper divisors (1).

239971079 is an equidigital number, since it uses as much as digits as its factorization.

239971079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 214326, while the sum is 47.

The square root of 239971079 is about 15490.9999354464. Note that the first 4 decimals coincide. The cubic root of 239971079 is about 621.4215378904.

The spelling of 239971079 in words is "two hundred thirty-nine million, nine hundred seventy-one thousand, seventy-nine".