79792858 has 4 divisors (see below), whose sum is σ = 119689290. Its totient is φ = 39896428.

The previous prime is 79792813. The next prime is 79792859. The reversal of 79792858 is 85829797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85829797 = 103 ⋅833299.

It can be written as a sum of positive squares in only one way, i.e., 58568409 + 21224449 = 7653^2 + 4607^2 .

It is a junction number, because it is equal to n+sod(n) for n = 79792799 and 79792808.

It is not an unprimeable number, because it can be changed into a prime (79792859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19948213 + ... + 19948216.

Almost surely, 2^79792858 is an apocalyptic number.

79792858 is a deficient number, since it is larger than the sum of its proper divisors (39896432).

79792858 is a wasteful number, since it uses less digits than its factorization.

79792858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39896431.

The product of its digits is 2540160, while the sum is 55.

The square root of 79792858 is about 8932.6848147687. The cubic root of 79792858 is about 430.5147216390.

The spelling of 79792858 in words is "seventy-nine million, seven hundred ninety-two thousand, eight hundred fifty-eight".