440159 has 2 divisors, whose sum is σ = 440160. Its totient is φ = 440158.

The previous prime is 440131. The next prime is 440171. The reversal of 440159 is 951044.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440159 - 2⁸ = 439903 is a prime.

It is a Chen prime.

It is equal to p₃₆₉₅₀ and since 440159 and 36950 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220079 + 220080.

It is an arithmetic number, because the mean of its divisors is an integer number (220080).

2⁴⁴⁰¹⁵⁹ is an apocalyptic number.

440159 is a deficient number, since it is larger than the sum of its proper divisors (1).

440159 is an equidigital number, since it uses as much as digits as its factorization.

440159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 440159 is about 663.4447980051. Note that the first 3 decimals coincide. The cubic root of 440159 is about 76.0682097701.

The spelling of 440159 in words is "four hundred forty thousand, one hundred fifty-nine".