72729499 has 2 divisors, whose sum is σ = 72729500. Its totient is φ = 72729498.

The previous prime is 72729493. The next prime is 72729521. The reversal of 72729499 is 99492727.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72729499 - 2⁵ = 72729467 is a prime.

It is not a weakly prime, because it can be changed into another prime (72729493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36364749 + 36364750.

It is an arithmetic number, because the mean of its divisors is an integer number (36364750).

Almost surely, 2^72729499 is an apocalyptic number.

72729499 is a deficient number, since it is larger than the sum of its proper divisors (1).

72729499 is an equidigital number, since it uses as much as digits as its factorization.

72729499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 49.

The square root of 72729499 is about 8528.1591800341. The cubic root of 72729499 is about 417.4170636171.

The spelling of 72729499 in words is "seventy-two million, seven hundred twenty-nine thousand, four hundred ninety-nine".