440999999 has 16 divisors (see below), whose sum is σ = 508080384. Its totient is φ = 378840000.

The previous prime is 440999983. The next prime is 441000023. The reversal of 440999999 is 999999044.

It is a Cunningham number, because it is equal to 21000²-1.

It is not a de Polignac number, because 440999999 - 2⁴ = 440999983 is a prime.

It is a Duffinian number.

440999999 is a modest number, since divided by 99999 gives 4409 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440999399) 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 15 ways as a sum of consecutive naturals, for example, 10499 + ... + 31499.

It is an arithmetic number, because the mean of its divisors is an integer number (31755024).

Almost surely, 2^440999999 is an apocalyptic number.

440999999 is a deficient number, since it is larger than the sum of its proper divisors (67080385).

440999999 is a wasteful number, since it uses less digits than its factorization.

440999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21118.

The product of its (nonzero) digits is 8503056, while the sum is 62.

The square root of 440999999 is about 20999.9999761905. Note that the first 4 decimals coincide. The cubic root of 440999999 is about 761.1662605267.

The spelling of 440999999 in words is "four hundred forty million, nine hundred ninety-nine thousand, nine hundred ninety-nine".