72237479 has 2 divisors, whose sum is σ = 72237480. Its totient is φ = 72237478.

The previous prime is 72237467. The next prime is 72237493. The reversal of 72237479 is 97473227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72237479 - 2²⁰ = 71188903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72237499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36118739 + 36118740.

It is an arithmetic number, because the mean of its divisors is an integer number (36118740).

Almost surely, 2^72237479 is an apocalyptic number.

72237479 is a deficient number, since it is larger than the sum of its proper divisors (1).

72237479 is an equidigital number, since it uses as much as digits as its factorization.

72237479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 41.

The square root of 72237479 is about 8499.2634386751. The cubic root of 72237479 is about 416.4736480567.

The spelling of 72237479 in words is "seventy-two million, two hundred thirty-seven thousand, four hundred seventy-nine".