887391 has 12 divisors (see below), whose sum is σ = 1312168. Its totient is φ = 577584.

The previous prime is 887387. The next prime is 887399. The reversal of 887391 is 193788.

887391 = 56² + 57² + ... + 141².

It is not a de Polignac number, because 887391 - 2² = 887387 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (887399) 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, 760 + ... + 1533.

2⁸⁸⁷³⁹¹ is an apocalyptic number.

887391 is a deficient number, since it is larger than the sum of its proper divisors (424777).

887391 is a wasteful number, since it uses less digits than its factorization.

887391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342 (or 2339 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 887391 is about 942.0143311012. The cubic root of 887391 is about 96.0959327484.

The spelling of 887391 in words is "eight hundred eighty-seven thousand, three hundred ninety-one".