4455778 has 4 divisors (see below), whose sum is σ = 6683670. Its totient is φ = 2227888.

The previous prime is 4455769. The next prime is 4455779. The reversal of 4455778 is 8775544.

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., 4255969 + 199809 = 2063^2 + 447^2 .

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 plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 4455778.

It is not an unprimeable number, because it can be changed into a prime (4455779) 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 as a sum of consecutive naturals, namely, 1113943 + ... + 1113946.

Almost surely, 2^4455778 is an apocalyptic number.

4455778 is a deficient number, since it is larger than the sum of its proper divisors (2227892).

4455778 is a wasteful number, since it uses less digits than its factorization.

4455778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227891.

The product of its digits is 156800, while the sum is 40.

The square root of 4455778 is about 2110.8713840497. The cubic root of 4455778 is about 164.5537744206.

The spelling of 4455778 in words is "four million, four hundred fifty-five thousand, seven hundred seventy-eight".