889745381 has 12 divisors (see below), whose sum is σ = 1038334572. Its totient is φ = 760189248.

The previous prime is 889745347. The next prime is 889745383. The reversal of 889745381 is 183547988.

It can be written as a sum of positive squares in 2 ways, for example, as 344102500 + 545642881 = 18550^2 + 23359^2 .

It is a de Polignac number, because none of the positive numbers 2^k-889745381 is a prime.

It is a super-2 number, since 2×889745381² = 1583293686021670322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889745383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13670 + ... + 44343.

It is an arithmetic number, because the mean of its divisors is an integer number (86527881).

Almost surely, 2^889745381 is an apocalyptic number.

It is an amenable number.

889745381 is a deficient number, since it is larger than the sum of its proper divisors (148589191).

889745381 is a wasteful number, since it uses less digits than its factorization.

889745381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58340 (or 58333 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 53.

The square root of 889745381 is about 29828.6000509578. The cubic root of 889745381 is about 961.8084332483.

The spelling of 889745381 in words is "eight hundred eighty-nine million, seven hundred forty-five thousand, three hundred eighty-one".