4891779 has 16 divisors (see below), whose sum is σ = 7321600. Its totient is φ = 3227688.

The previous prime is 4891763. The next prime is 4891781. The reversal of 4891779 is 9771984.

It is not a de Polignac number, because 4891779 - 2⁴ = 4891763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1902 + ... + 3660.

It is an arithmetic number, because the mean of its divisors is an integer number (457600).

Almost surely, 2^4891779 is an apocalyptic number.

4891779 is a deficient number, since it is larger than the sum of its proper divisors (2429821).

4891779 is a wasteful number, since it uses less digits than its factorization.

4891779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871 (or 1865 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 4891779 is about 2211.7366479760. The cubic root of 4891779 is about 169.7548831924.

The spelling of 4891779 in words is "four million, eight hundred ninety-one thousand, seven hundred seventy-nine".