4943978 has 32 divisors (see below), whose sum is σ = 8467200. Its totient is φ = 2149056.

The previous prime is 4943963. The next prime is 4944019. The reversal of 4943978 is 8793494.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁸ + 9⁴ + 4⁸ + 3¹⁴ + 9⁴ + 7⁵ + 8 .

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 in 15 ways as a sum of consecutive naturals, for example, 59525 + ... + 59607.

It is an arithmetic number, because the mean of its divisors is an integer number (264600).

Almost surely, 2^4943978 is an apocalyptic number.

4943978 is a deficient number, since it is larger than the sum of its proper divisors (3523222).

4943978 is a wasteful number, since it uses less digits than its factorization.

4943978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206.

The product of its digits is 217728, while the sum is 44.

The square root of 4943978 is about 2223.5057904130. The cubic root of 4943978 is about 170.3565526928.

The spelling of 4943978 in words is "four million, nine hundred forty-three thousand, nine hundred seventy-eight".