4494778 has 4 divisors (see below), whose sum is σ = 6742170. Its totient is φ = 2247388.

The previous prime is 4494769. The next prime is 4494781. The reversal of 4494778 is 8774944.

It is a happy number.

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., 3972049 + 522729 = 1993^2 + 723^2 .

It is an Ulam number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1123693 + ... + 1123696.

Almost surely, 2^4494778 is an apocalyptic number.

4494778 is a deficient number, since it is larger than the sum of its proper divisors (2247392).

4494778 is a wasteful number, since it uses less digits than its factorization.

4494778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247391.

The product of its digits is 225792, while the sum is 43.

The square root of 4494778 is about 2120.0891490690. The cubic root of 4494778 is about 165.0324760073.

The spelling of 4494778 in words is "four million, four hundred ninety-four thousand, seven hundred seventy-eight".