440045778 has 8 divisors (see below), whose sum is σ = 880091568. Its totient is φ = 146681924.

The previous prime is 440045759. The next prime is 440045779. The reversal of 440045778 is 877540044.

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

440045778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (440045779) 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, 36670476 + ... + 36670487.

It is an arithmetic number, because the mean of its divisors is an integer number (110011446).

Almost surely, 2^440045778 is an apocalyptic number.

440045778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440045778 is a wasteful number, since it uses less digits than its factorization.

440045778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73340968.

The product of its (nonzero) digits is 125440, while the sum is 39.

The square root of 440045778 is about 20977.2681252827. The cubic root of 440045778 is about 760.6168687463.

The spelling of 440045778 in words is "four hundred forty million, forty-five thousand, seven hundred seventy-eight".