189422247 has 8 divisors (see below), whose sum is σ = 288643456. Its totient is φ = 108241272.

The previous prime is 189422237. The next prime is 189422251. The reversal of 189422247 is 742224981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189422247 - 2⁴ = 189422231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189422237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4510033 + ... + 4510074.

It is an arithmetic number, because the mean of its divisors is an integer number (36080432).

Almost surely, 2^189422247 is an apocalyptic number.

189422247 is a deficient number, since it is larger than the sum of its proper divisors (99221209).

189422247 is an equidigital number, since it uses as much as digits as its factorization.

189422247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9020117.

The product of its digits is 64512, while the sum is 39.

The square root of 189422247 is about 13763.0754920548. The cubic root of 189422247 is about 574.3064070431.

The spelling of 189422247 in words is "one hundred eighty-nine million, four hundred twenty-two thousand, two hundred forty-seven".