72044239 has 2 divisors, whose sum is σ = 72044240. Its totient is φ = 72044238.

The previous prime is 72044237. The next prime is 72044243. The reversal of 72044239 is 93244027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72044239 - 2¹ = 72044237 is a prime.

Together with 72044237, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72044239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72044237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36022119 + 36022120.

It is an arithmetic number, because the mean of its divisors is an integer number (36022120).

Almost surely, 2^72044239 is an apocalyptic number.

72044239 is a deficient number, since it is larger than the sum of its proper divisors (1).

72044239 is an equidigital number, since it uses as much as digits as its factorization.

72044239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 72044239 is about 8487.8877820103. The cubic root of 72044239 is about 416.1019516362.

The spelling of 72044239 in words is "seventy-two million, forty-four thousand, two hundred thirty-nine".