4939778 has 4 divisors (see below), whose sum is σ = 7409670. Its totient is φ = 2469888.

The previous prime is 4939769. The next prime is 4939783. The reversal of 4939778 is 8779394.

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

It can be written as a sum of positive squares in only one way, i.e., 2845969 + 2093809 = 1687^2 + 1447^2 .

It is a super-3 number, since 3×4939778³ (a number of 21 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1234943 + ... + 1234946.

Almost surely, 2^4939778 is an apocalyptic number.

4939778 is a deficient number, since it is larger than the sum of its proper divisors (2469892).

4939778 is a wasteful number, since it uses less digits than its factorization.

4939778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469891.

The product of its digits is 381024, while the sum is 47.

The square root of 4939778 is about 2222.5611352671. The cubic root of 4939778 is about 170.3082986871.

The spelling of 4939778 in words is "four million, nine hundred thirty-nine thousand, seven hundred seventy-eight".