898138 has 16 divisors (see below), whose sum is σ = 1415880. Its totient is φ = 426816.

The previous prime is 898133. The next prime is 898147. The reversal of 898138 is 831898.

It can be written as a sum of positive squares in 4 ways, for example, as 859329 + 38809 = 927^2 + 197^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 898097 and 898106.

It is not an unprimeable number, because it can be changed into a prime (898133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3808 + ... + 4036.

2⁸⁹⁸¹³⁸ is an apocalyptic number.

898138 is a deficient number, since it is larger than the sum of its proper divisors (517742).

898138 is a wasteful number, since it uses less digits than its factorization.

898138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its digits is 13824, while the sum is 37.

The square root of 898138 is about 947.7014297763. The cubic root of 898138 is about 96.4823094814.

The spelling of 898138 in words is "eight hundred ninety-eight thousand, one hundred thirty-eight".