72979223 has 2 divisors, whose sum is σ = 72979224. Its totient is φ = 72979222.

The previous prime is 72979217. The next prime is 72979229. The reversal of 72979223 is 32297927.

It is a balanced prime because it is at equal distance from previous prime (72979217) and next prime (72979229).

It is a cyclic number.

It is not a de Polignac number, because 72979223 - 2⁸ = 72978967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72979229) 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, 36489611 + 36489612.

It is an arithmetic number, because the mean of its divisors is an integer number (36489612).

Almost surely, 2^72979223 is an apocalyptic number.

72979223 is a deficient number, since it is larger than the sum of its proper divisors (1).

72979223 is an equidigital number, since it uses as much as digits as its factorization.

72979223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 41.

The square root of 72979223 is about 8542.7877768326. The cubic root of 72979223 is about 417.8942655879.

The spelling of 72979223 in words is "seventy-two million, nine hundred seventy-nine thousand, two hundred twenty-three".