898999 has 4 divisors (see below), whose sum is σ = 900936. Its totient is φ = 897064.

The previous prime is 898987. The next prime is 899009. The reversal of 898999 is 999898.

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 898999 - 2¹⁵ = 866231 is a prime.

It is a Duffinian number.

898999 is a modest number, since divided by 999 gives 898 as remainder.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898199) 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, 192 + ... + 1354.

It is an arithmetic number, because the mean of its divisors is an integer number (225234).

2⁸⁹⁸⁹⁹⁹ is an apocalyptic number.

898999 is a deficient number, since it is larger than the sum of its proper divisors (1937).

898999 is a wasteful number, since it uses less digits than its factorization.

898999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936.

The product of its digits is 419904, while the sum is 52.

The square root of 898999 is about 948.1555779512. The cubic root of 898999 is about 96.5131305569.

The spelling of 898999 in words is "eight hundred ninety-eight thousand, nine hundred ninety-nine".