440140191 has 8 divisors (see below), whose sum is σ = 587473200. Its totient is φ = 293116992.

The previous prime is 440140171. The next prime is 440140223. The reversal of 440140191 is 191041044.

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

It is not a de Polignac number, because 440140191 - 2¹³ = 440131999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440140171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74116 + ... + 79833.

It is an arithmetic number, because the mean of its divisors is an integer number (73434150).

Almost surely, 2^440140191 is an apocalyptic number.

440140191 is a deficient number, since it is larger than the sum of its proper divisors (147333009).

440140191 is a wasteful number, since it uses less digits than its factorization.

440140191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154905.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 440140191 is about 20979.5183691142. The cubic root of 440140191 is about 760.6712623184.

Subtracting from 440140191 its product of nonzero digits (576), we obtain a triangular number (440139615 = T₂₉₆₆₉).

The spelling of 440140191 in words is "four hundred forty million, one hundred forty thousand, one hundred ninety-one".