189698 has 4 divisors (see below), whose sum is σ = 284550. Its totient is φ = 94848.

The previous prime is 189697. The next prime is 189701. The reversal of 189698 is 896981.

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

It can be written as a sum of positive squares in only one way, i.e., 187489 + 2209 = 433^2 + 47^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47423 + ... + 47426.

2¹⁸⁹⁶⁹⁸ is an apocalyptic number.

189698 is a deficient number, since it is larger than the sum of its proper divisors (94852).

189698 is an equidigital number, since it uses as much as digits as its factorization.

189698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94851.

The product of its digits is 31104, while the sum is 41.

The square root of 189698 is about 435.5433388309. The cubic root of 189698 is about 57.4584955685.

The spelling of 189698 in words is "one hundred eighty-nine thousand, six hundred ninety-eight".