189214247 has 2 divisors, whose sum is σ = 189214248. Its totient is φ = 189214246.

The previous prime is 189214237. The next prime is 189214283. The reversal of 189214247 is 742412981.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (742412981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189214247 - 2¹⁰ = 189213223 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189214247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189214237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94607123 + 94607124.

It is an arithmetic number, because the mean of its divisors is an integer number (94607124).

Almost surely, 2^189214247 is an apocalyptic number.

189214247 is a deficient number, since it is larger than the sum of its proper divisors (1).

189214247 is an equidigital number, since it uses as much as digits as its factorization.

189214247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 189214247 is about 13755.5169659304. The cubic root of 189214247 is about 574.0961193832.

The spelling of 189214247 in words is "one hundred eighty-nine million, two hundred fourteen thousand, two hundred forty-seven".