72445829 has 2 divisors, whose sum is σ = 72445830. Its totient is φ = 72445828.

The previous prime is 72445817. The next prime is 72445843. The reversal of 72445829 is 92854427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54612100 + 17833729 = 7390^2 + 4223^2 .

It is a cyclic number.

It is not a de Polignac number, because 72445829 - 2⁸ = 72445573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72445229) 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, 36222914 + 36222915.

It is an arithmetic number, because the mean of its divisors is an integer number (36222915).

Almost surely, 2^72445829 is an apocalyptic number.

It is an amenable number.

72445829 is a deficient number, since it is larger than the sum of its proper divisors (1).

72445829 is an equidigital number, since it uses as much as digits as its factorization.

72445829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The square root of 72445829 is about 8511.5115578844. The cubic root of 72445829 is about 416.8736666032.

The spelling of 72445829 in words is "seventy-two million, four hundred forty-five thousand, eight hundred twenty-nine".