4987779 has 4 divisors (see below), whose sum is σ = 6650376. Its totient is φ = 3325184.

The previous prime is 4987771. The next prime is 4987793. The reversal of 4987779 is 9777894.

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

It is a cyclic number.

It is not a de Polignac number, because 4987779 - 2³ = 4987771 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4987771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831294 + ... + 831299.

It is an arithmetic number, because the mean of its divisors is an integer number (1662594).

Almost surely, 2^4987779 is an apocalyptic number.

4987779 is a deficient number, since it is larger than the sum of its proper divisors (1662597).

4987779 is a wasteful number, since it uses less digits than its factorization.

4987779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662596.

The product of its digits is 889056, while the sum is 51.

The square root of 4987779 is about 2233.3336069652. Note that the first 3 decimals coincide. The cubic root of 4987779 is about 170.8581635664.

The spelling of 4987779 in words is "four million, nine hundred eighty-seven thousand, seven hundred seventy-nine".