84072799 has 2 divisors, whose sum is σ = 84072800. Its totient is φ = 84072798.

The previous prime is 84072761. The next prime is 84072809. The reversal of 84072799 is 99727048.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84072799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84072749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42036399 + 42036400.

It is an arithmetic number, because the mean of its divisors is an integer number (42036400).

Almost surely, 2^84072799 is an apocalyptic number.

84072799 is a deficient number, since it is larger than the sum of its proper divisors (1).

84072799 is an equidigital number, since it uses as much as digits as its factorization.

84072799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 84072799 is about 9169.1220408499. The cubic root of 84072799 is about 438.0783951612.

The spelling of 84072799 in words is "eighty-four million, seventy-two thousand, seven hundred ninety-nine".