440104393 has 4 divisors (see below), whose sum is σ = 440412948. Its totient is φ = 439795840.

The previous prime is 440104387. The next prime is 440104397. The reversal of 440104393 is 393401044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 275161744 + 164942649 = 16588^2 + 12843^2 .

It is a cyclic number.

It is not a de Polignac number, because 440104393 - 2⁵ = 440104361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440104397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152128 + ... + 154993.

It is an arithmetic number, because the mean of its divisors is an integer number (110103237).

Almost surely, 2^440104393 is an apocalyptic number.

It is an amenable number.

440104393 is a deficient number, since it is larger than the sum of its proper divisors (308555).

440104393 is a wasteful number, since it uses less digits than its factorization.

440104393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308554.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 440104393 is about 20978.6651863268. The cubic root of 440104393 is about 760.6506391558.

The spelling of 440104393 in words is "four hundred forty million, one hundred four thousand, three hundred ninety-three".