72444941 has 2 divisors, whose sum is σ = 72444942. Its totient is φ = 72444940.

The previous prime is 72444937. The next prime is 72444971. The reversal of 72444941 is 14944427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71402500 + 1042441 = 8450^2 + 1021^2 .

It is a cyclic number.

It is not a de Polignac number, because 72444941 - 2² = 72444937 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72444901) 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, 36222470 + 36222471.

It is an arithmetic number, because the mean of its divisors is an integer number (36222471).

Almost surely, 2^72444941 is an apocalyptic number.

It is an amenable number.

72444941 is a deficient number, since it is larger than the sum of its proper divisors (1).

72444941 is an equidigital number, since it uses as much as digits as its factorization.

72444941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The square root of 72444941 is about 8511.4593930771. The cubic root of 72444941 is about 416.8719633290.

The spelling of 72444941 in words is "seventy-two million, four hundred forty-four thousand, nine hundred forty-one".