82099117 has 4 divisors (see below), whose sum is σ = 82125756. Its totient is φ = 82072480.

The previous prime is 82099111. The next prime is 82099123. The reversal of 82099117 is 71199028.

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

It is an interprime number because it is at equal distance from previous prime (82099111) and next prime (82099123).

It can be written as a sum of positive squares in 2 ways, for example, as 23561316 + 58537801 = 4854^2 + 7651^2 .

It is a cyclic number.

It is not a de Polignac number, because 82099117 - 2¹⁵ = 82066349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82099111) 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, 7984 + ... + 15097.

It is an arithmetic number, because the mean of its divisors is an integer number (20531439).

Almost surely, 2^82099117 is an apocalyptic number.

It is an amenable number.

82099117 is a deficient number, since it is larger than the sum of its proper divisors (26639).

82099117 is a wasteful number, since it uses less digits than its factorization.

82099117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26638.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 82099117 is about 9060.8563061115. The cubic root of 82099117 is about 434.6231236126.

The spelling of 82099117 in words is "eighty-two million, ninety-nine thousand, one hundred seventeen".