440426 has 16 divisors (see below), whose sum is σ = 763584. Its totient is φ = 186624.

The previous prime is 440399. The next prime is 440431. The reversal of 440426 is 624044.

It is a super-2 number, since 2×440426² = 387950122952, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 440398 and 440407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2186 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (47724).

2⁴⁴⁰⁴²⁶ is an apocalyptic number.

440426 is a deficient number, since it is larger than the sum of its proper divisors (323158).

440426 is a wasteful number, since it uses less digits than its factorization.

440426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 440426 is about 663.6459899675. The cubic root of 440426 is about 76.0835876272.

The spelling of 440426 in words is "four hundred forty thousand, four hundred twenty-six".