891387 has 12 divisors (see below), whose sum is σ = 1471600. Its totient is φ = 509328.

The previous prime is 891379. The next prime is 891389. The reversal of 891387 is 783198.

It is not a de Polignac number, because 891387 - 2³ = 891379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (891389) 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, 7012 + ... + 7137.

2⁸⁹¹³⁸⁷ is an apocalyptic number.

891387 is a deficient number, since it is larger than the sum of its proper divisors (580213).

891387 is a wasteful number, since it uses less digits than its factorization.

891387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14162 (or 14159 counting only the distinct ones).

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

The square root of 891387 is about 944.1329355552. The cubic root of 891387 is about 96.2399595981.

The spelling of 891387 in words is "eight hundred ninety-one thousand, three hundred eighty-seven".