440401985 has 8 divisors (see below), whose sum is σ = 539726976. Its totient is φ = 344825200.

The previous prime is 440401979. The next prime is 440401991. The reversal of 440401985 is 589104044.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (440401979) and next prime (440401991).

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

It is not a de Polignac number, because 440401985 - 2⁸ = 440401729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936791 + ... + 937260.

It is an arithmetic number, because the mean of its divisors is an integer number (67465872).

Almost surely, 2^440401985 is an apocalyptic number.

It is an amenable number.

440401985 is a deficient number, since it is larger than the sum of its proper divisors (99324991).

440401985 is a wasteful number, since it uses less digits than its factorization.

440401985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874103.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 440401985 is about 20985.7567173547. The cubic root of 440401985 is about 760.8220473842.

The spelling of 440401985 in words is "four hundred forty million, four hundred one thousand, nine hundred eighty-five".