72287339 has 2 divisors, whose sum is σ = 72287340. Its totient is φ = 72287338.

The previous prime is 72287329. The next prime is 72287393. The reversal of 72287339 is 93378227.

Together with next prime (72287393) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (93378227) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72287339 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72287296 and 72287305.

It is not a weakly prime, because it can be changed into another prime (72287309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36143669 + 36143670.

It is an arithmetic number, because the mean of its divisors is an integer number (36143670).

Almost surely, 2^72287339 is an apocalyptic number.

72287339 is a deficient number, since it is larger than the sum of its proper divisors (1).

72287339 is an equidigital number, since it uses as much as digits as its factorization.

72287339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 41.

The square root of 72287339 is about 8502.1961280601. The cubic root of 72287339 is about 416.5694459751.

The spelling of 72287339 in words is "seventy-two million, two hundred eighty-seven thousand, three hundred thirty-nine".