72422393 has 2 divisors, whose sum is σ = 72422394. Its totient is φ = 72422392.

The previous prime is 72422369. The next prime is 72422401. The reversal of 72422393 is 39322427.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55472704 + 16949689 = 7448^2 + 4117^2 .

It is a cyclic number.

It is not a de Polignac number, because 72422393 - 2¹⁶ = 72356857 is a prime.

It is a weakly prime.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36211196 + 36211197.

It is an arithmetic number, because the mean of its divisors is an integer number (36211197).

Almost surely, 2^72422393 is an apocalyptic number.

It is an amenable number.

72422393 is a deficient number, since it is larger than the sum of its proper divisors (1).

72422393 is an equidigital number, since it uses as much as digits as its factorization.

72422393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 32.

The square root of 72422393 is about 8510.1347227879. The cubic root of 72422393 is about 416.8287093108.

The spelling of 72422393 in words is "seventy-two million, four hundred twenty-two thousand, three hundred ninety-three".