440043161 has 4 divisors (see below), whose sum is σ = 446241024. Its totient is φ = 433845300.

The previous prime is 440043157. The next prime is 440043167. The reversal of 440043161 is 161340044.

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 440043161 - 2² = 440043157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (440043167) 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, 3098825 + ... + 3098966.

It is an arithmetic number, because the mean of its divisors is an integer number (111560256).

Almost surely, 2^440043161 is an apocalyptic number.

It is an amenable number.

440043161 is a deficient number, since it is larger than the sum of its proper divisors (6197863).

440043161 is an equidigital number, since it uses as much as digits as its factorization.

440043161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6197862.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 440043161 is about 20977.2057481448. The cubic root of 440043161 is about 760.6153609196.

The spelling of 440043161 in words is "four hundred forty million, forty-three thousand, one hundred sixty-one".