72889799 has 2 divisors, whose sum is σ = 72889800. Its totient is φ = 72889798.

The previous prime is 72889771. The next prime is 72889811. The reversal of 72889799 is 99798827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72889799 - 2⁸ = 72889543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72889709) 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, 36444899 + 36444900.

It is an arithmetic number, because the mean of its divisors is an integer number (36444900).

Almost surely, 2^72889799 is an apocalyptic number.

72889799 is a deficient number, since it is larger than the sum of its proper divisors (1).

72889799 is an equidigital number, since it uses as much as digits as its factorization.

72889799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 59.

The square root of 72889799 is about 8537.5522838809. The cubic root of 72889799 is about 417.7235089937.

The spelling of 72889799 in words is "seventy-two million, eight hundred eighty-nine thousand, seven hundred ninety-nine".