440026 has 4 divisors (see below), whose sum is σ = 660042. Its totient is φ = 220012.

The previous prime is 440023. The next prime is 440039. The reversal of 440026 is 620044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 358801 + 81225 = 599^2 + 285^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 439991 and 440009.

It is not an unprimeable number, because it can be changed into a prime (440023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110005 + ... + 110008.

2⁴⁴⁰⁰²⁶ is an apocalyptic number.

440026 is a deficient number, since it is larger than the sum of its proper divisors (220016).

440026 is a wasteful number, since it uses less digits than its factorization.

440026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220015.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 440026 is about 663.3445560190. The cubic root of 440026 is about 76.0605473185.

The spelling of 440026 in words is "four hundred forty thousand, twenty-six".