189407 has 2 divisors, whose sum is σ = 189408. Its totient is φ = 189406.

The previous prime is 189401. The next prime is 189421. The reversal of 189407 is 704981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189407 - 2⁴ = 189391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189401) 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 as a sum of consecutive naturals, namely, 94703 + 94704.

It is an arithmetic number, because the mean of its divisors is an integer number (94704).

2¹⁸⁹⁴⁰⁷ is an apocalyptic number.

189407 is a deficient number, since it is larger than the sum of its proper divisors (1).

189407 is an equidigital number, since it uses as much as digits as its factorization.

189407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 189407 is about 435.2091451245. The cubic root of 189407 is about 57.4290997581.

The spelling of 189407 in words is "one hundred eighty-nine thousand, four hundred seven".