884391 has 8 divisors (see below), whose sum is σ = 1248624. Its totient is φ = 554880.

The previous prime is 884371. The next prime is 884417. The reversal of 884391 is 193488.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 884391 - 2¹³ = 876199 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (884311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8620 + ... + 8721.

It is an arithmetic number, because the mean of its divisors is an integer number (156078).

2⁸⁸⁴³⁹¹ is an apocalyptic number.

884391 is a deficient number, since it is larger than the sum of its proper divisors (364233).

884391 is a wasteful number, since it uses less digits than its factorization.

884391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17361.

The product of its digits is 6912, while the sum is 33.

The square root of 884391 is about 940.4206505602. The cubic root of 884391 is about 95.9875200791.

It can be divided in two parts, 884 and 391, that added together give a triangular number (1275 = T₅₀).

The spelling of 884391 in words is "eight hundred eighty-four thousand, three hundred ninety-one".