79466789 has 4 divisors (see below), whose sum is σ = 84141324. Its totient is φ = 74792256.

The previous prime is 79466753. The next prime is 79466809. The reversal of 79466789 is 98766497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98766497 = 1049 ⋅94153.

It can be written as a sum of positive squares in 2 ways, for example, as 41705764 + 37761025 = 6458^2 + 6145^2 .

It is a cyclic number.

It is not a de Polignac number, because 79466789 - 2⁸ = 79466533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79466749) 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, 2337242 + ... + 2337275.

It is an arithmetic number, because the mean of its divisors is an integer number (21035331).

Almost surely, 2^79466789 is an apocalyptic number.

It is an amenable number.

79466789 is a deficient number, since it is larger than the sum of its proper divisors (4674535).

79466789 is a wasteful number, since it uses less digits than its factorization.

79466789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4674534.

The product of its digits is 4572288, while the sum is 56.

The square root of 79466789 is about 8914.4146751203. The cubic root of 79466789 is about 429.9274963388.

The spelling of 79466789 in words is "seventy-nine million, four hundred sixty-six thousand, seven hundred eighty-nine".