440018089 has 24 divisors (see below), whose sum is σ = 553547520. Its totient is φ = 347389056.

The previous prime is 440018053. The next prime is 440018099. The reversal of 440018089 is 980810044.

It is not a de Polignac number, because 440018089 - 2⁷ = 440017961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440018099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33532 + ... + 44770.

It is an arithmetic number, because the mean of its divisors is an integer number (23064480).

Almost surely, 2^440018089 is an apocalyptic number.

440018089 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

440018089 is a deficient number, since it is larger than the sum of its proper divisors (113529431).

440018089 is a wasteful number, since it uses less digits than its factorization.

440018089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11317 (or 11310 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 440018089 is about 20976.6081385909. The cubic root of 440018089 is about 760.6009149802.

The spelling of 440018089 in words is "four hundred forty million, eighteen thousand, eighty-nine".