898405 has 8 divisors (see below), whose sum is σ = 1101312. Its totient is φ = 703248.

The previous prime is 898369. The next prime is 898409. The reversal of 898405 is 504898.

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 898405 - 2¹⁵ = 865637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898409) 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, 1677 + ... + 2146.

It is an arithmetic number, because the mean of its divisors is an integer number (137664).

2⁸⁹⁸⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

898405 is a deficient number, since it is larger than the sum of its proper divisors (202907).

898405 is a wasteful number, since it uses less digits than its factorization.

898405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 898405 is about 947.8422864591. The cubic root of 898405 is about 96.4918693428.

The spelling of 898405 in words is "eight hundred ninety-eight thousand, four hundred five".