189844007 has 4 divisors (see below), whose sum is σ = 189892560. Its totient is φ = 189795456.

The previous prime is 189843961. The next prime is 189844013. The reversal of 189844007 is 700448981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700448981 = 281 ⋅2492701.

It is a cyclic number.

It is not a de Polignac number, because 189844007 - 2⁸ = 189843751 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 (189844027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17843 + ... + 26420.

It is an arithmetic number, because the mean of its divisors is an integer number (47473140).

Almost surely, 2^189844007 is an apocalyptic number.

189844007 is a deficient number, since it is larger than the sum of its proper divisors (48553).

189844007 is an equidigital number, since it uses as much as digits as its factorization.

189844007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48552.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 189844007 is about 13778.3891293576. The cubic root of 189844007 is about 574.7323336419.

The spelling of 189844007 in words is "one hundred eighty-nine million, eight hundred forty-four thousand, seven".