82789049 has 4 divisors (see below), whose sum is σ = 94616064. Its totient is φ = 70962036.

The previous prime is 82789039. The next prime is 82789051. The reversal of 82789049 is 94098728.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82789049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82788994 and 82789012.

It is not an unprimeable number, because it can be changed into a prime (82789009) 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, 5913497 + ... + 5913510.

It is an arithmetic number, because the mean of its divisors is an integer number (23654016).

Almost surely, 2^82789049 is an apocalyptic number.

It is an amenable number.

82789049 is a deficient number, since it is larger than the sum of its proper divisors (11827015).

82789049 is a wasteful number, since it uses less digits than its factorization.

82789049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11827014.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 82789049 is about 9098.8487733339. The cubic root of 82789049 is about 435.8372021473.

The spelling of 82789049 in words is "eighty-two million, seven hundred eighty-nine thousand, forty-nine".