4909978 has 8 divisors (see below), whose sum is σ = 7392960. Its totient is φ = 2445660.

The previous prime is 4909969. The next prime is 4909981. The reversal of 4909978 is 8799094.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 3988 + ... + 5071.

It is an arithmetic number, because the mean of its divisors is an integer number (924120).

Almost surely, 2^4909978 is an apocalyptic number.

4909978 is a deficient number, since it is larger than the sum of its proper divisors (2482982).

4909978 is a wasteful number, since it uses less digits than its factorization.

4909978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 4909978 is about 2215.8470163800. The cubic root of 4909978 is about 169.9651370262.

The spelling of 4909978 in words is "four million, nine hundred nine thousand, nine hundred seventy-eight".