79452817 has 4 divisors (see below), whose sum is σ = 80024560. Its totient is φ = 78881076.

The previous prime is 79452811. The next prime is 79452823. The reversal of 79452817 is 71825497.

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: 71825497 = 3359 ⋅21383.

It is an interprime number because it is at equal distance from previous prime (79452811) and next prime (79452823).

It is a cyclic number.

It is not a de Polignac number, because 79452817 - 2³ = 79452809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79452811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285663 + ... + 285940.

It is an arithmetic number, because the mean of its divisors is an integer number (20006140).

Almost surely, 2^79452817 is an apocalyptic number.

It is an amenable number.

79452817 is a deficient number, since it is larger than the sum of its proper divisors (571743).

79452817 is a wasteful number, since it uses less digits than its factorization.

79452817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571742.

The product of its digits is 141120, while the sum is 43.

The square root of 79452817 is about 8913.6309661103. The cubic root of 79452817 is about 429.9022979755.

The spelling of 79452817 in words is "seventy-nine million, four hundred fifty-two thousand, eight hundred seventeen".