887638969 has 12 divisors (see below), whose sum is σ = 1093299444. Its totient is φ = 716077824.

The previous prime is 887638967. The next prime is 887638987. The reversal of 887638969 is 969836788.

It can be written as a sum of positive squares in 2 ways, for example, as 301369600 + 586269369 = 17360^2 + 24213^2 .

It is not a de Polignac number, because 887638969 - 2¹ = 887638967 is a prime.

It is a super-2 number, since 2×887638969² = 1575805878574765922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 887638969.

It is not an unprimeable number, because it can be changed into a prime (887638967) 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, 531964 + ... + 533629.

It is an arithmetic number, because the mean of its divisors is an integer number (91108287).

Almost surely, 2^887638969 is an apocalyptic number.

It is an amenable number.

887638969 is a deficient number, since it is larger than the sum of its proper divisors (205660475).

887638969 is a wasteful number, since it uses less digits than its factorization.

887638969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065624 (or 1065617 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 64.

The square root of 887638969 is about 29793.2705321185. The cubic root of 887638969 is about 961.0488280275.

The spelling of 887638969 in words is "eight hundred eighty-seven million, six hundred thirty-eight thousand, nine hundred sixty-nine".