72448939 has 2 divisors, whose sum is σ = 72448940. Its totient is φ = 72448938.

The previous prime is 72448913. The next prime is 72448967. The reversal of 72448939 is 93984427.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72448939 - 2⁷ = 72448811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72448969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36224469 + 36224470.

It is an arithmetic number, because the mean of its divisors is an integer number (36224470).

Almost surely, 2^72448939 is an apocalyptic number.

72448939 is a deficient number, since it is larger than the sum of its proper divisors (1).

72448939 is an equidigital number, since it uses as much as digits as its factorization.

72448939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 72448939 is about 8511.6942496779. The cubic root of 72448939 is about 416.8796317893.

The spelling of 72448939 in words is "seventy-two million, four hundred forty-eight thousand, nine hundred thirty-nine".