898391 has 8 divisors (see below), whose sum is σ = 1001280. Its totient is φ = 800352.

The previous prime is 898369. The next prime is 898409. The reversal of 898391 is 193898.

898391 = T₉₈ + T₉₉ + ... + T₁₈₄.

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

It is a cyclic number.

It is not a de Polignac number, because 898391 - 2⁶ = 898327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 898391.

It is not an unprimeable number, because it can be changed into a prime (898361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815 + ... + 1568.

It is an arithmetic number, because the mean of its divisors is an integer number (125160).

2⁸⁹⁸³⁹¹ is an apocalyptic number.

898391 is a deficient number, since it is larger than the sum of its proper divisors (102889).

898391 is a wasteful number, since it uses less digits than its factorization.

898391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425.

The product of its digits is 15552, while the sum is 38.

The square root of 898391 is about 947.8349012354. The cubic root of 898391 is about 96.4913681237.

The spelling of 898391 in words is "eight hundred ninety-eight thousand, three hundred ninety-one".