440649121 has 8 divisors (see below), whose sum is σ = 506008800. Its totient is φ = 379506240.

The previous prime is 440649109. The next prime is 440649149. The reversal of 440649121 is 121946044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 440649121 - 2⁵ = 440649089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440649101) 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 7 ways as a sum of consecutive naturals, for example, 1053976 + ... + 1054393.

It is an arithmetic number, because the mean of its divisors is an integer number (63251100).

Almost surely, 2^440649121 is an apocalyptic number.

It is an amenable number.

440649121 is a deficient number, since it is larger than the sum of its proper divisors (65359679).

440649121 is a wasteful number, since it uses less digits than its factorization.

440649121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108399.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 440649121 is about 20991.6440756793. The cubic root of 440649121 is about 760.9643350849.

The spelling of 440649121 in words is "four hundred forty million, six hundred forty-nine thousand, one hundred twenty-one".