79291147 has 4 divisors (see below), whose sum is σ = 85390480. Its totient is φ = 73191816.

The previous prime is 79291129. The next prime is 79291193. The reversal of 79291147 is 74119297.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74119297 = 7 ⋅10588471.

It is a cyclic number.

It is not a de Polignac number, because 79291147 - 2⁷ = 79291019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79291547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3049647 + ... + 3049672.

It is an arithmetic number, because the mean of its divisors is an integer number (21347620).

Almost surely, 2^79291147 is an apocalyptic number.

79291147 is a deficient number, since it is larger than the sum of its proper divisors (6099333).

79291147 is a wasteful number, since it uses less digits than its factorization.

79291147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6099332.

The product of its digits is 31752, while the sum is 40.

The square root of 79291147 is about 8904.5576532470. The cubic root of 79291147 is about 429.6105126475.

The spelling of 79291147 in words is "seventy-nine million, two hundred ninety-one thousand, one hundred forty-seven".