79948787 has 2 divisors, whose sum is σ = 79948788. Its totient is φ = 79948786.

The previous prime is 79948777. The next prime is 79948793. The reversal of 79948787 is 78784997.

It is a strong prime.

It is an emirp because it is prime and its reverse (78784997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79948787 - 2⁶ = 79948723 is a prime.

It is not a weakly prime, because it can be changed into another prime (79948777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39974393 + 39974394.

It is an arithmetic number, because the mean of its divisors is an integer number (39974394).

Almost surely, 2^79948787 is an apocalyptic number.

79948787 is a deficient number, since it is larger than the sum of its proper divisors (1).

79948787 is an equidigital number, since it uses as much as digits as its factorization.

79948787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 59.

The square root of 79948787 is about 8941.4085579399. The cubic root of 79948787 is about 430.7949724928.

The spelling of 79948787 in words is "seventy-nine million, nine hundred forty-eight thousand, seven hundred eighty-seven".