82669979 has 8 divisors (see below), whose sum is σ = 94638048. Its totient is φ = 70741440.

The previous prime is 82669949. The next prime is 82669987. The reversal of 82669979 is 97996628.

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

It is not a de Polignac number, because 82669979 - 2¹⁶ = 82604443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82669949) 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, 5252 + ... + 13889.

It is an arithmetic number, because the mean of its divisors is an integer number (11829756).

Almost surely, 2^82669979 is an apocalyptic number.

82669979 is a deficient number, since it is larger than the sum of its proper divisors (11968069).

82669979 is a wasteful number, since it uses less digits than its factorization.

82669979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19765.

The product of its digits is 2939328, while the sum is 56.

The square root of 82669979 is about 9092.3032835470. The cubic root of 82669979 is about 435.6281566464.

The spelling of 82669979 in words is "eighty-two million, six hundred sixty-nine thousand, nine hundred seventy-nine".