898993 has 4 divisors (see below), whose sum is σ = 900900. Its totient is φ = 897088.

The previous prime is 898987. The next prime is 899009. The reversal of 898993 is 399898.

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

It can be written as a sum of positive squares in 2 ways, for example, as 824464 + 74529 = 908^2 + 273^2 .

It is a cyclic number.

It is not a de Polignac number, because 898993 - 2⁹ = 898481 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (898493) 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 3 ways as a sum of consecutive naturals, for example, 333 + ... + 1381.

It is an arithmetic number, because the mean of its divisors is an integer number (225225).

2⁸⁹⁸⁹⁹³ is an apocalyptic number.

It is an amenable number.

898993 is a deficient number, since it is larger than the sum of its proper divisors (1907).

898993 is a wasteful number, since it uses less digits than its factorization.

898993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906.

The product of its digits is 139968, while the sum is 46.

The square root of 898993 is about 948.1524139082. The cubic root of 898993 is about 96.5129158440.

Adding to 898993 its product of digits (139968), we get a triangular number (1038961 = T₁₄₄₁).

It can be divided in two parts, 898 and 993, that added together give a triangular number (1891 = T₆₁).

The spelling of 898993 in words is "eight hundred ninety-eight thousand, nine hundred ninety-three".