82399739 has 8 divisors (see below), whose sum is σ = 85155312. Its totient is φ = 79682400.

The previous prime is 82399717. The next prime is 82399747. The reversal of 82399739 is 93799328.

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 82399739 - 2⁸ = 82399483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82390739) 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, 5144 + ... + 13829.

It is an arithmetic number, because the mean of its divisors is an integer number (10644414).

Almost surely, 2^82399739 is an apocalyptic number.

82399739 is a deficient number, since it is larger than the sum of its proper divisors (2755573).

82399739 is a wasteful number, since it uses less digits than its factorization.

82399739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19117.

The product of its digits is 734832, while the sum is 50.

The square root of 82399739 is about 9077.4301980241. The cubic root of 82399739 is about 435.1529633370.

It can be divided in two parts, 82399 and 739, that added together give a palindrome (83138).

The spelling of 82399739 in words is "eighty-two million, three hundred ninety-nine thousand, seven hundred thirty-nine".