189814447 has 4 divisors (see below), whose sum is σ = 189973696. Its totient is φ = 189655200.

The previous prime is 189814433. The next prime is 189814481. The reversal of 189814447 is 744418981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744418981 = 571 ⋅1303711.

It is a cyclic number.

It is not a de Polignac number, because 189814447 - 2¹⁵ = 189781679 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189814397 and 189814406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189814487) 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, 77823 + ... + 80224.

It is an arithmetic number, because the mean of its divisors is an integer number (47493424).

Almost surely, 2^189814447 is an apocalyptic number.

189814447 is a deficient number, since it is larger than the sum of its proper divisors (159249).

189814447 is a wasteful number, since it uses less digits than its factorization.

189814447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159248.

The product of its digits is 258048, while the sum is 46.

The square root of 189814447 is about 13777.3163932603. The cubic root of 189814447 is about 574.7025021855.

The spelling of 189814447 in words is "one hundred eighty-nine million, eight hundred fourteen thousand, four hundred forty-seven".