440055561 has 32 divisors (see below), whose sum is σ = 679841280. Its totient is φ = 250387200.

The previous prime is 440055559. The next prime is 440055601. The reversal of 440055561 is 165550044.

It is not a de Polignac number, because 440055561 - 2¹ = 440055559 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (440055061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67746 + ... + 73956.

It is an arithmetic number, because the mean of its divisors is an integer number (21245040).

Almost surely, 2^440055561 is an apocalyptic number.

It is an amenable number.

440055561 is a deficient number, since it is larger than the sum of its proper divisors (239785719).

440055561 is a wasteful number, since it uses less digits than its factorization.

440055561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6357.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 440055561 is about 20977.5013049696. The cubic root of 440055561 is about 760.6225053263.

The spelling of 440055561 in words is "four hundred forty million, fifty-five thousand, five hundred sixty-one".