72840499 has 2 divisors, whose sum is σ = 72840500. Its totient is φ = 72840498.

The previous prime is 72840487. The next prime is 72840541. The reversal of 72840499 is 99404827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72840499 - 2⁷ = 72840371 is a prime.

It is not a weakly prime, because it can be changed into another prime (72840419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36420249 + 36420250.

It is an arithmetic number, because the mean of its divisors is an integer number (36420250).

Almost surely, 2^72840499 is an apocalyptic number.

72840499 is a deficient number, since it is larger than the sum of its proper divisors (1).

72840499 is an equidigital number, since it uses as much as digits as its factorization.

72840499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 72840499 is about 8534.6645511115. The cubic root of 72840499 is about 417.6293101073.

The spelling of 72840499 in words is "seventy-two million, eight hundred forty thousand, four hundred ninety-nine".