72444971 has 2 divisors, whose sum is σ = 72444972. Its totient is φ = 72444970.

The previous prime is 72444941. The next prime is 72445019. The reversal of 72444971 is 17944427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72444971 - 2¹⁰ = 72443947 is a prime.

It is not a weakly prime, because it can be changed into another prime (72444901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36222485 + 36222486.

It is an arithmetic number, because the mean of its divisors is an integer number (36222486).

Almost surely, 2^72444971 is an apocalyptic number.

72444971 is a deficient number, since it is larger than the sum of its proper divisors (1).

72444971 is an equidigital number, since it uses as much as digits as its factorization.

72444971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 38.

The square root of 72444971 is about 8511.4611554069. The cubic root of 72444971 is about 416.8720208723.

The spelling of 72444971 in words is "seventy-two million, four hundred forty-four thousand, nine hundred seventy-one".