79457 has 4 divisors (see below), whose sum is σ = 90816. Its totient is φ = 68100.

The previous prime is 79451. The next prime is 79481. The reversal of 79457 is 75497.

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: 75497 = 17 ⋅4441.

It is a cyclic number.

It is not a de Polignac number, because 79457 - 2⁶ = 79393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79451) 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, 5669 + ... + 5682.

It is an arithmetic number, because the mean of its divisors is an integer number (22704).

2⁷⁹⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

79457 is a deficient number, since it is larger than the sum of its proper divisors (11359).

79457 is a wasteful number, since it uses less digits than its factorization.

79457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11358.

The product of its digits is 8820, while the sum is 32.

The square root of 79457 is about 281.8811806418. The cubic root of 79457 is about 42.9909842284.

The spelling of 79457 in words is "seventy-nine thousand, four hundred fifty-seven".