440400022 has 4 divisors (see below), whose sum is σ = 660600036. Its totient is φ = 220200010.

The previous prime is 440400017. The next prime is 440400029. The reversal of 440400022 is 220004044.

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

It is a junction number, because it is equal to n+sod(n) for n = 440399969 and 440400005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440400029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100004 + ... + 110100007.

It is an arithmetic number, because the mean of its divisors is an integer number (165150009).

Almost surely, 2^440400022 is an apocalyptic number.

440400022 is a deficient number, since it is larger than the sum of its proper divisors (220200014).

440400022 is a wasteful number, since it uses less digits than its factorization.

440400022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220200013.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 440400022 is about 20985.7099474857. The cubic root of 440400022 is about 760.8209169807.

Adding to 440400022 its reverse (220004044), we get a palindrome (660404066).

The spelling of 440400022 in words is "four hundred forty million, four hundred thousand, twenty-two".