189479 has 2 divisors, whose sum is σ = 189480. Its totient is φ = 189478.

The previous prime is 189473. The next prime is 189491. The reversal of 189479 is 974981.

189479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189479 - 2⁴ = 189463 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94739 + 94740.

It is an arithmetic number, because the mean of its divisors is an integer number (94740).

2¹⁸⁹⁴⁷⁹ is an apocalyptic number.

189479 is a deficient number, since it is larger than the sum of its proper divisors (1).

189479 is an equidigital number, since it uses as much as digits as its factorization.

189479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 189479 is about 435.2918561150. The cubic root of 189479 is about 57.4363757499.

The spelling of 189479 in words is "one hundred eighty-nine thousand, four hundred seventy-nine".