4912978 has 16 divisors (see below), whose sum is σ = 8519040. Its totient is φ = 2081376.

The previous prime is 4912967. The next prime is 4912981. The reversal of 4912978 is 8792194.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 4912978.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 726 + ... + 3217.

It is an arithmetic number, because the mean of its divisors is an integer number (532440).

Almost surely, 2^4912978 is an apocalyptic number.

4912978 is a deficient number, since it is larger than the sum of its proper divisors (3606062).

4912978 is a wasteful number, since it uses less digits than its factorization.

4912978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041.

The product of its digits is 36288, while the sum is 40.

The square root of 4912978 is about 2216.5238550487. The cubic root of 4912978 is about 169.9997462511. Note that the first 3 decimals are identical.

The spelling of 4912978 in words is "four million, nine hundred twelve thousand, nine hundred seventy-eight".