82758979 has 8 divisors (see below), whose sum is σ = 83598480. Its totient is φ = 81924096.

The previous prime is 82758971. The next prime is 82758983. The reversal of 82758979 is 97985728.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82758979 - 2³ = 82758971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82758971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42867 + ... + 44755.

It is an arithmetic number, because the mean of its divisors is an integer number (10449810).

Almost surely, 2^82758979 is an apocalyptic number.

82758979 is a deficient number, since it is larger than the sum of its proper divisors (839501).

82758979 is a wasteful number, since it uses less digits than its factorization.

82758979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309.

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

The square root of 82758979 is about 9097.1962164175. The cubic root of 82758979 is about 435.7844286149.

The spelling of 82758979 in words is "eighty-two million, seven hundred fifty-eight thousand, nine hundred seventy-nine".