82789433 has 4 divisors (see below), whose sum is σ = 82821888. Its totient is φ = 82756980.

The previous prime is 82789417. The next prime is 82789457. The reversal of 82789433 is 33498728.

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 not a de Polignac number, because 82789433 - 2⁴ = 82789417 is a prime.

It is a super-2 number, since 2×82789433² = 13708180432922978, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82789633) 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, 12041 + ... + 17622.

It is an arithmetic number, because the mean of its divisors is an integer number (20705472).

Almost surely, 2^82789433 is an apocalyptic number.

It is an amenable number.

82789433 is a deficient number, since it is larger than the sum of its proper divisors (32455).

82789433 is a wasteful number, since it uses less digits than its factorization.

82789433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32454.

The product of its digits is 290304, while the sum is 44.

The square root of 82789433 is about 9098.8698748801. The cubic root of 82789433 is about 435.8378759934.

The spelling of 82789433 in words is "eighty-two million, seven hundred eighty-nine thousand, four hundred thirty-three".