82789398 has 16 divisors (see below), whose sum is σ = 183976560. Its totient is φ = 27596448.

The previous prime is 82789391. The next prime is 82789409. The reversal of 82789398 is 89398728.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1533137 = 82789398 / (8 + 2 + 7 + 8 + 9 + 3 + 9 + 8).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82789391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766515 + ... + 766622.

It is an arithmetic number, because the mean of its divisors is an integer number (11498535).

Almost surely, 2^82789398 is an apocalyptic number.

82789398 is an abundant number, since it is smaller than the sum of its proper divisors (101187162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82789398 is a wasteful number, since it uses less digits than its factorization.

82789398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533148 (or 1533142 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 82789398 is about 9098.8679515641. The cubic root of 82789398 is about 435.8378145752.

The spelling of 82789398 in words is "eighty-two million, seven hundred eighty-nine thousand, three hundred ninety-eight".