72444847 has 2 divisors, whose sum is σ = 72444848. Its totient is φ = 72444846.

The previous prime is 72444829. The next prime is 72444851. The reversal of 72444847 is 74844427.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72444847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72444347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36222423 + 36222424.

It is an arithmetic number, because the mean of its divisors is an integer number (36222424).

Almost surely, 2^72444847 is an apocalyptic number.

72444847 is a deficient number, since it is larger than the sum of its proper divisors (1).

72444847 is an equidigital number, since it uses as much as digits as its factorization.

72444847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 200704, while the sum is 40.

The square root of 72444847 is about 8511.4538711080. The cubic root of 72444847 is about 416.8717830267.

The spelling of 72444847 in words is "seventy-two million, four hundred forty-four thousand, eight hundred forty-seven".