72944369 has 2 divisors, whose sum is σ = 72944370. Its totient is φ = 72944368.

The previous prime is 72944359. The next prime is 72944387. The reversal of 72944369 is 96344927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72931600 + 12769 = 8540^2 + 113^2 .

It is a cyclic number.

It is not a de Polignac number, because 72944369 - 2¹⁶ = 72878833 is a prime.

It is a super-2 number, since 2×72944369² = 10641761937616322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72944359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36472184 + 36472185.

It is an arithmetic number, because the mean of its divisors is an integer number (36472185).

Almost surely, 2^72944369 is an apocalyptic number.

It is an amenable number.

72944369 is a deficient number, since it is larger than the sum of its proper divisors (1).

72944369 is an equidigital number, since it uses as much as digits as its factorization.

72944369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 44.

The square root of 72944369 is about 8540.7475668117. The cubic root of 72944369 is about 417.8277279010.

The spelling of 72944369 in words is "seventy-two million, nine hundred forty-four thousand, three hundred sixty-nine".