898431 has 4 divisors (see below), whose sum is σ = 1197912. Its totient is φ = 598952.

The previous prime is 898427. The next prime is 898439. The reversal of 898431 is 134898.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 898431 - 2² = 898427 is a prime.

It is a super-2 number, since 2×898431² = 1614356523522, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

898431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 898392 and 898401.

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 898431.

It is not an unprimeable number, because it can be changed into a prime (898439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149736 + ... + 149741.

It is an arithmetic number, because the mean of its divisors is an integer number (299478).

2⁸⁹⁸⁴³¹ is an apocalyptic number.

898431 is a deficient number, since it is larger than the sum of its proper divisors (299481).

898431 is a wasteful number, since it uses less digits than its factorization.

898431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299480.

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

The square root of 898431 is about 947.8560017218. The cubic root of 898431 is about 96.4928001644.

The spelling of 898431 in words is "eight hundred ninety-eight thousand, four hundred thirty-one".