79899571 has 2 divisors, whose sum is σ = 79899572. Its totient is φ = 79899570.

The previous prime is 79899559. The next prime is 79899583. The reversal of 79899571 is 17599897.

It is a balanced prime because it is at equal distance from previous prime (79899559) and next prime (79899583).

It is a cyclic number.

It is not a de Polignac number, because 79899571 - 2¹³ = 79891379 is a prime.

It is not a weakly prime, because it can be changed into another prime (79899551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39949785 + 39949786.

It is an arithmetic number, because the mean of its divisors is an integer number (39949786).

Almost surely, 2^79899571 is an apocalyptic number.

79899571 is a deficient number, since it is larger than the sum of its proper divisors (1).

79899571 is an equidigital number, since it uses as much as digits as its factorization.

79899571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 55.

The square root of 79899571 is about 8938.6559951706. The cubic root of 79899571 is about 430.7065560692.

The spelling of 79899571 in words is "seventy-nine million, eight hundred ninety-nine thousand, five hundred seventy-one".