4978777 has 4 divisors (see below), whose sum is σ = 4991716. Its totient is φ = 4965840.

The previous prime is 4978769. The next prime is 4978783. The reversal of 4978777 is 7778794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7778794 = 2 ⋅3889397.

It can be written as a sum of positive squares in 2 ways, for example, as 3857296 + 1121481 = 1964^2 + 1059^2 .

It is a cyclic number.

It is not a de Polignac number, because 4978777 - 2³ = 4978769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4978777.

It is not an unprimeable number, because it can be changed into a prime (4978277) by changing a digit.

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, 5874 + ... + 6667.

It is an arithmetic number, because the mean of its divisors is an integer number (1247929).

Almost surely, 2^4978777 is an apocalyptic number.

It is an amenable number.

4978777 is a deficient number, since it is larger than the sum of its proper divisors (12939).

4978777 is a wasteful number, since it uses less digits than its factorization.

4978777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12938.

The product of its digits is 691488, while the sum is 49.

The square root of 4978777 is about 2231.3173239143. The cubic root of 4978777 is about 170.7553127503.

The spelling of 4978777 in words is "four million, nine hundred seventy-eight thousand, seven hundred seventy-seven".