189401 has 2 divisors, whose sum is σ = 189402. Its totient is φ = 189400.

The previous prime is 189391. The next prime is 189407. The reversal of 189401 is 104981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121801 + 67600 = 349^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 189401 - 2⁶ = 189337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (189407) 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 as a sum of consecutive naturals, namely, 94700 + 94701.

It is an arithmetic number, because the mean of its divisors is an integer number (94701).

2¹⁸⁹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

189401 is a deficient number, since it is larger than the sum of its proper divisors (1).

189401 is an equidigital number, since it uses as much as digits as its factorization.

189401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 189401 is about 435.2022518324. The cubic root of 189401 is about 57.4284933422.

The spelling of 189401 in words is "one hundred eighty-nine thousand, four hundred one".