440899189 has 4 divisors (see below), whose sum is σ = 443604256. Its totient is φ = 438194124.

The previous prime is 440899181. The next prime is 440899201. The reversal of 440899189 is 981998044.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 440899189 - 2³ = 440899181 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 (440899181) 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, 1352289 + ... + 1352614.

It is an arithmetic number, because the mean of its divisors is an integer number (110901064).

Almost surely, 2^440899189 is an apocalyptic number.

It is an amenable number.

440899189 is a deficient number, since it is larger than the sum of its proper divisors (2705067).

440899189 is a wasteful number, since it uses less digits than its factorization.

440899189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705066.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 440899189 is about 20997.5996009068. The cubic root of 440899189 is about 761.1082567334.

The spelling of 440899189 in words is "four hundred forty million, eight hundred ninety-nine thousand, one hundred eighty-nine".