82791079 has 4 divisors (see below), whose sum is σ = 94618384. Its totient is φ = 70963776.

The previous prime is 82791073. The next prime is 82791097. The reversal of 82791079 is 97019728.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82791079 - 2⁵ = 82791047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82791073) 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, 5913642 + ... + 5913655.

It is an arithmetic number, because the mean of its divisors is an integer number (23654596).

Almost surely, 2^82791079 is an apocalyptic number.

82791079 is a deficient number, since it is larger than the sum of its proper divisors (11827305).

82791079 is a wasteful number, since it uses less digits than its factorization.

82791079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11827304.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 82791079 is about 9098.9603252240. The cubic root of 82791079 is about 435.8407643829.

The spelling of 82791079 in words is "eighty-two million, seven hundred ninety-one thousand, seventy-nine".