82719091 has 16 divisors (see below), whose sum is σ = 102122944. Its totient is φ = 65245824.

The previous prime is 82719079. The next prime is 82719113. The reversal of 82719091 is 19091728.

It is not a de Polignac number, because 82719091 - 2¹¹ = 82717043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82719091.

It is not an unprimeable number, because it can be changed into a prime (82719011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32725 + ... + 35161.

It is an arithmetic number, because the mean of its divisors is an integer number (6382684).

Almost surely, 2^82719091 is an apocalyptic number.

82719091 is a deficient number, since it is larger than the sum of its proper divisors (19403853).

82719091 is a wasteful number, since it uses less digits than its factorization.

82719091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830.

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

The square root of 82719091 is about 9095.0036283665. The cubic root of 82719091 is about 435.7144045405.

The spelling of 82719091 in words is "eighty-two million, seven hundred nineteen thousand, ninety-one".