440869729 has 4 divisors (see below), whose sum is σ = 450249984. Its totient is φ = 431489476.

The previous prime is 440869697. The next prime is 440869739. The reversal of 440869729 is 927968044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 440869729 - 2⁵ = 440869697 is a prime.

It is a super-2 number, since 2×440869729² = 388732235897066882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440869739) 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 3 ways as a sum of consecutive naturals, for example, 4690057 + ... + 4690150.

It is an arithmetic number, because the mean of its divisors is an integer number (112562496).

Almost surely, 2^440869729 is an apocalyptic number.

It is an amenable number.

440869729 is a deficient number, since it is larger than the sum of its proper divisors (9380255).

440869729 is an equidigital number, since it uses as much as digits as its factorization.

440869729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9380254.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 440869729 is about 20996.8980804308. The cubic root of 440869729 is about 761.0913044465.

The spelling of 440869729 in words is "four hundred forty million, eight hundred sixty-nine thousand, seven hundred twenty-nine".