440020444 has 12 divisors (see below), whose sum is σ = 770198968. Its totient is φ = 219963600.

The previous prime is 440020397. The next prime is 440020459. The reversal of 440020444 is 444020044.

It is a super-2 number, since 2×440020444² = 387235982275914272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17914 + ... + 34654.

Almost surely, 2^440020444 is an apocalyptic number.

It is an amenable number.

440020444 is a deficient number, since it is larger than the sum of its proper divisors (330178524).

440020444 is a wasteful number, since it uses less digits than its factorization.

440020444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23316 (or 23314 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 440020444 is about 20976.6642724719. The cubic root of 440020444 is about 760.6022719032.

Adding to 440020444 its reverse (444020044), we get a palindrome (884040488).

The spelling of 440020444 in words is "four hundred forty million, twenty thousand, four hundred forty-four".