4491478 has 4 divisors (see below), whose sum is σ = 6737220. Its totient is φ = 2245738.

The previous prime is 4491469. The next prime is 4491481. The reversal of 4491478 is 8741944.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122868 + ... + 1122871.

It is an arithmetic number, because the mean of its divisors is an integer number (1684305).

Almost surely, 2^4491478 is an apocalyptic number.

4491478 is a deficient number, since it is larger than the sum of its proper divisors (2245742).

4491478 is a wasteful number, since it uses less digits than its factorization.

4491478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245741.

The product of its digits is 32256, while the sum is 37.

The square root of 4491478 is about 2119.3107370086. The cubic root of 4491478 is about 164.9920779790.

The spelling of 4491478 in words is "four million, four hundred ninety-one thousand, four hundred seventy-eight".