889987629 has 16 divisors (see below), whose sum is σ = 1225532160. Its totient is φ = 574168320.

The previous prime is 889987613. The next prime is 889987633. The reversal of 889987629 is 926789988.

It is not a de Polignac number, because 889987629 - 2⁴ = 889987613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 889987629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889987639) 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, 22912 + ... + 48009.

It is an arithmetic number, because the mean of its divisors is an integer number (76595760).

Almost surely, 2^889987629 is an apocalyptic number.

889987629 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

889987629 is a deficient number, since it is larger than the sum of its proper divisors (335544531).

889987629 is a wasteful number, since it uses less digits than its factorization.

889987629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71060.

The product of its digits is 31352832, while the sum is 66.

The square root of 889987629 is about 29832.6604412010. The cubic root of 889987629 is about 961.8957147829.

The spelling of 889987629 in words is "eight hundred eighty-nine million, nine hundred eighty-seven thousand, six hundred twenty-nine".