72422369 has 2 divisors, whose sum is σ = 72422370. Its totient is φ = 72422368.

The previous prime is 72422341. The next prime is 72422393. The reversal of 72422369 is 96322427.

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., 63808144 + 8614225 = 7988^2 + 2935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72422369 is a prime.

It is a super-2 number, since 2×72422369² = 10489999063144322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72422569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36211184 + 36211185.

It is an arithmetic number, because the mean of its divisors is an integer number (36211185).

Almost surely, 2^72422369 is an apocalyptic number.

It is an amenable number.

72422369 is a deficient number, since it is larger than the sum of its proper divisors (1).

72422369 is an equidigital number, since it uses as much as digits as its factorization.

72422369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 72422369 is about 8510.1333127043. The cubic root of 72422369 is about 416.8286632667.

The spelling of 72422369 in words is "seventy-two million, four hundred twenty-two thousand, three hundred sixty-nine".