72445379 has 2 divisors, whose sum is σ = 72445380. Its totient is φ = 72445378.

The previous prime is 72445361. The next prime is 72445391. The reversal of 72445379 is 97354427.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72445379 is a prime.

It is a super-3 number, since 3×72445379³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (72445349) by changing a digit.

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, 36222689 + 36222690.

It is an arithmetic number, because the mean of its divisors is an integer number (36222690).

Almost surely, 2^72445379 is an apocalyptic number.

72445379 is a deficient number, since it is larger than the sum of its proper divisors (1).

72445379 is an equidigital number, since it uses as much as digits as its factorization.

72445379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 41.

The square root of 72445379 is about 8511.4851230558. The cubic root of 72445379 is about 416.8728034593.

The spelling of 72445379 in words is "seventy-two million, four hundred forty-five thousand, three hundred seventy-nine".