889692391 has 16 divisors (see below), whose sum is σ = 1043814400. Its totient is φ = 742592448.

The previous prime is 889692379. The next prime is 889692407. The reversal of 889692391 is 193296988.

889692391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 889692391 - 2²¹ = 887595239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889692361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29350 + ... + 51388.

It is an arithmetic number, because the mean of its divisors is an integer number (65238400).

Almost surely, 2^889692391 is an apocalyptic number.

889692391 is a deficient number, since it is larger than the sum of its proper divisors (154122009).

889692391 is a wasteful number, since it uses less digits than its factorization.

889692391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22198.

The product of its digits is 1679616, while the sum is 55.

The square root of 889692391 is about 29827.7117962475. The cubic root of 889692391 is about 961.7893389314.

The spelling of 889692391 in words is "eight hundred eighty-nine million, six hundred ninety-two thousand, three hundred ninety-one".