189890229 has 8 divisors (see below), whose sum is σ = 259362432. Its totient is φ = 123505760.

The previous prime is 189890227. The next prime is 189890243. The reversal of 189890229 is 922098981.

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

It is a cyclic number.

It is not a de Polignac number, because 189890229 - 2¹ = 189890227 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189890227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771789 + ... + 772034.

It is an arithmetic number, because the mean of its divisors is an integer number (32420304).

Almost surely, 2^189890229 is an apocalyptic number.

It is an amenable number.

189890229 is a deficient number, since it is larger than the sum of its proper divisors (69472203).

189890229 is a wasteful number, since it uses less digits than its factorization.

189890229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543867.

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 189890229 is about 13780.0663641363. The cubic root of 189890229 is about 574.7789739031.

The spelling of 189890229 in words is "one hundred eighty-nine million, eight hundred ninety thousand, two hundred twenty-nine".