4573978 has 4 divisors (see below), whose sum is σ = 6860970. Its totient is φ = 2286988.

The previous prime is 4573949. The next prime is 4573981. The reversal of 4573978 is 8793754.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8793754 = 2 ⋅4396877.

It can be written as a sum of positive squares in only one way, i.e., 2537649 + 2036329 = 1593^2 + 1427^2 .

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, 1143493 + ... + 1143496.

Almost surely, 2^4573978 is an apocalyptic number.

4573978 is a deficient number, since it is larger than the sum of its proper divisors (2286992).

4573978 is a wasteful number, since it uses less digits than its factorization.

4573978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286991.

The product of its digits is 211680, while the sum is 43.

The square root of 4573978 is about 2138.6860452156. The cubic root of 4573978 is about 165.9961531987.

The spelling of 4573978 in words is "four million, five hundred seventy-three thousand, nine hundred seventy-eight".