82319473 has 4 divisors (see below), whose sum is σ = 82349428. Its totient is φ = 82289520.

The previous prime is 82319467. The next prime is 82319509. The reversal of 82319473 is 37491328.

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

It can be written as a sum of positive squares in 2 ways, for example, as 78446449 + 3873024 = 8857^2 + 1968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82319473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82319443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10386 + ... + 16507.

It is an arithmetic number, because the mean of its divisors is an integer number (20587357).

Almost surely, 2^82319473 is an apocalyptic number.

It is an amenable number.

82319473 is a deficient number, since it is larger than the sum of its proper divisors (29955).

82319473 is a wasteful number, since it uses less digits than its factorization.

82319473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29954.

The product of its digits is 36288, while the sum is 37.

The square root of 82319473 is about 9073.0079356297. The cubic root of 82319473 is about 435.0116225370.

The spelling of 82319473 in words is "eighty-two million, three hundred nineteen thousand, four hundred seventy-three".