440381378 has 4 divisors (see below), whose sum is σ = 660572070. Its totient is φ = 220190688.

The previous prime is 440381377. The next prime is 440381393. The reversal of 440381378 is 873183044.

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

It can be written as a sum of positive squares in only one way, i.e., 403085929 + 37295449 = 20077^2 + 6107^2 .

It is not an unprimeable number, because it can be changed into a prime (440381371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110095343 + ... + 110095346.

Almost surely, 2^440381378 is an apocalyptic number.

440381378 is a deficient number, since it is larger than the sum of its proper divisors (220190692).

440381378 is a wasteful number, since it uses less digits than its factorization.

440381378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220190691.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 440381378 is about 20985.2657357490. The cubic root of 440381378 is about 760.8101805709.

The spelling of 440381378 in words is "four hundred forty million, three hundred eighty-one thousand, three hundred seventy-eight".