72797899 has 2 divisors, whose sum is σ = 72797900. Its totient is φ = 72797898.

The previous prime is 72797897. The next prime is 72797903. The reversal of 72797899 is 99879727.

It is a weak prime.

It is an emirp because it is prime and its reverse (99879727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72797899 - 2¹ = 72797897 is a prime.

Together with 72797897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72797897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36398949 + 36398950.

It is an arithmetic number, because the mean of its divisors is an integer number (36398950).

Almost surely, 2^72797899 is an apocalyptic number.

72797899 is a deficient number, since it is larger than the sum of its proper divisors (1).

72797899 is an equidigital number, since it uses as much as digits as its factorization.

72797899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000752, while the sum is 58.

The square root of 72797899 is about 8532.1684816933. The cubic root of 72797899 is about 417.5478788601.

The spelling of 72797899 in words is "seventy-two million, seven hundred ninety-seven thousand, eight hundred ninety-nine".