889952805 has 128 divisors (see below), whose sum is σ = 1977384960. Its totient is φ = 370344960.

The previous prime is 889952803. The next prime is 889952827. The reversal of 889952805 is 508259988.

It is not a de Polignac number, because 889952805 - 2¹ = 889952803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889952803) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 497122 + ... + 498908.

It is an arithmetic number, because the mean of its divisors is an integer number (15448320).

Almost surely, 2^889952805 is an apocalyptic number.

889952805 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

889952805 is an abundant number, since it is smaller than the sum of its proper divisors (1087432155).

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

889952805 is a wasteful number, since it uses less digits than its factorization.

889952805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856 (or 1850 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 54.

The square root of 889952805 is about 29832.0767798690. The cubic root of 889952805 is about 961.8831687309.

The spelling of 889952805 in words is "eight hundred eighty-nine million, nine hundred fifty-two thousand, eight hundred five".