79476769 has 4 divisors (see below), whose sum is σ = 79578544. Its totient is φ = 79374996.

The previous prime is 79476743. The next prime is 79476781. The reversal of 79476769 is 96767497.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96767497 = 67 ⋅1444291.

It is a cyclic number.

It is not a de Polignac number, because 79476769 - 2¹³ = 79468577 is a prime.

It is a super-2 number, since 2×79476769² = 12633113621358722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79479769) 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, 49707 + ... + 51280.

It is an arithmetic number, because the mean of its divisors is an integer number (19894636).

Almost surely, 2^79476769 is an apocalyptic number.

It is an amenable number.

79476769 is a deficient number, since it is larger than the sum of its proper divisors (101775).

79476769 is a wasteful number, since it uses less digits than its factorization.

79476769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101774.

The product of its digits is 4000752, while the sum is 55.

The square root of 79476769 is about 8914.9744250895. The cubic root of 79476769 is about 429.9454933615.

The spelling of 79476769 in words is "seventy-nine million, four hundred seventy-six thousand, seven hundred sixty-nine".