444307378 has 4 divisors (see below), whose sum is σ = 666461070. Its totient is φ = 222153688.

The previous prime is 444307361. The next prime is 444307379. The reversal of 444307378 is 873703444.

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., 284360769 + 159946609 = 16863^2 + 12647^2 .

It is a super-2 number, since 2×444307378² = 394818092290469768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 444307378.

It is not an unprimeable number, because it can be changed into a prime (444307379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111076843 + ... + 111076846.

Almost surely, 2^444307378 is an apocalyptic number.

444307378 is a deficient number, since it is larger than the sum of its proper divisors (222153692).

444307378 is a wasteful number, since it uses less digits than its factorization.

444307378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222153691.

The product of its (nonzero) digits is 225792, while the sum is 40.

The square root of 444307378 is about 21078.6000009488. The cubic root of 444307378 is about 763.0643693472.

The spelling of 444307378 in words is "four hundred forty-four million, three hundred seven thousand, three hundred seventy-eight".