440682638 has 8 divisors (see below), whose sum is σ = 721117080. Its totient is φ = 200310280.

The previous prime is 440682631. The next prime is 440682643. The reversal of 440682638 is 836286044.

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

It is a junction number, because it is equal to n+sod(n) for n = 440682595 and 440682604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440682631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10015493 + ... + 10015536.

It is an arithmetic number, because the mean of its divisors is an integer number (90139635).

Almost surely, 2^440682638 is an apocalyptic number.

440682638 is a deficient number, since it is larger than the sum of its proper divisors (280434442).

440682638 is a wasteful number, since it uses less digits than its factorization.

440682638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20031042.

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 440682638 is about 20992.4424019693. The cubic root of 440682638 is about 760.9836282850.

The spelling of 440682638 in words is "four hundred forty million, six hundred eighty-two thousand, six hundred thirty-eight".