72000239 has 2 divisors, whose sum is σ = 72000240. Its totient is φ = 72000238.

The previous prime is 72000221. The next prime is 72000241. The reversal of 72000239 is 93200027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72000239 - 2¹² = 71996143 is a prime.

Together with 72000241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72000209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36000119 + 36000120.

It is an arithmetic number, because the mean of its divisors is an integer number (36000120).

Almost surely, 2^72000239 is an apocalyptic number.

72000239 is a deficient number, since it is larger than the sum of its proper divisors (1).

72000239 is an equidigital number, since it uses as much as digits as its factorization.

72000239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 72000239 is about 8485.2954574369. The cubic root of 72000239 is about 416.0172249247.

The spelling of 72000239 in words is "seventy-two million, two hundred thirty-nine", and thus it is an aban number.