72223339 has 2 divisors, whose sum is σ = 72223340. Its totient is φ = 72223338.

The previous prime is 72223321. The next prime is 72223367. The reversal of 72223339 is 93332227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72223339 - 2²¹ = 70126187 is a prime.

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 72223339.

It is not a weakly prime, because it can be changed into another prime (72223379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36111669 + 36111670.

It is an arithmetic number, because the mean of its divisors is an integer number (36111670).

Almost surely, 2^72223339 is an apocalyptic number.

72223339 is a deficient number, since it is larger than the sum of its proper divisors (1).

72223339 is an equidigital number, since it uses as much as digits as its factorization.

72223339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 31.

The square root of 72223339 is about 8498.4315611765. The cubic root of 72223339 is about 416.4464723129.

The spelling of 72223339 in words is "seventy-two million, two hundred twenty-three thousand, three hundred thirty-nine".