189617429 has 4 divisors (see below), whose sum is σ = 189981900. Its totient is φ = 189252960.

The previous prime is 189617383. The next prime is 189617447. The reversal of 189617429 is 924716981.

189617429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 924716981 = 199 ⋅4646819.

It can be written as a sum of positive squares in 2 ways, for example, as 16826404 + 172791025 = 4102^2 + 13145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189617429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189617479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181454 + ... + 182495.

It is an arithmetic number, because the mean of its divisors is an integer number (47495475).

Almost surely, 2^189617429 is an apocalyptic number.

It is an amenable number.

189617429 is a deficient number, since it is larger than the sum of its proper divisors (364471).

189617429 is an equidigital number, since it uses as much as digits as its factorization.

189617429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364470.

The product of its digits is 217728, while the sum is 47.

The square root of 189617429 is about 13770.1644507246. The cubic root of 189617429 is about 574.5035957683.

The spelling of 189617429 in words is "one hundred eighty-nine million, six hundred seventeen thousand, four hundred twenty-nine".