79541899 has 2 divisors, whose sum is σ = 79541900. Its totient is φ = 79541898.

The previous prime is 79541879. The next prime is 79541921. The reversal of 79541899 is 99814597.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79541899 is a prime.

It is not a weakly prime, because it can be changed into another prime (79541849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39770949 + 39770950.

It is an arithmetic number, because the mean of its divisors is an integer number (39770950).

Almost surely, 2^79541899 is an apocalyptic number.

79541899 is a deficient number, since it is larger than the sum of its proper divisors (1).

79541899 is an equidigital number, since it uses as much as digits as its factorization.

79541899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 52.

The square root of 79541899 is about 8918.6265198179. The cubic root of 79541899 is about 430.0629058861.

The spelling of 79541899 in words is "seventy-nine million, five hundred forty-one thousand, eight hundred ninety-nine".