79747659 has 10 divisors (see below), whose sum is σ = 119129340. Its totient is φ = 53165052.

The previous prime is 79747643. The next prime is 79747721. The reversal of 79747659 is 95674797.

It is a happy number.

It is not a de Polignac number, because 79747659 - 2⁴ = 79747643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79747639) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 492189 + ... + 492350.

It is an arithmetic number, because the mean of its divisors is an integer number (11912934).

Almost surely, 2^79747659 is an apocalyptic number.

79747659 is a deficient number, since it is larger than the sum of its proper divisors (39381681).

79747659 is an equidigital number, since it uses as much as digits as its factorization.

79747659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984551 (or 984542 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The square root of 79747659 is about 8930.1544779472. The cubic root of 79747659 is about 430.4334173271.

The spelling of 79747659 in words is "seventy-nine million, seven hundred forty-seven thousand, six hundred fifty-nine".