4889857 has 6 divisors (see below), whose sum is σ = 5688258. Its totient is φ = 4191264.

The previous prime is 4889851. The next prime is 4889879. The reversal of 4889857 is 7589884.

It can be written as a sum of positive squares in only one way, i.e., 4036081 + 853776 = 2009^2 + 924^2 .

It is not a de Polignac number, because 4889857 - 2¹⁵ = 4857089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 99793 = 4889857 / (4 + 8 + 8 + 9 + 8 + 5 + 7).

It is a Duffinian number.

4889857 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4889857.

It is not an unprimeable number, because it can be changed into a prime (4889851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49848 + ... + 49945.

It is an arithmetic number, because the mean of its divisors is an integer number (948043).

Almost surely, 2^4889857 is an apocalyptic number.

It is an amenable number.

4889857 is a deficient number, since it is larger than the sum of its proper divisors (798401).

4889857 is an equidigital number, since it uses as much as digits as its factorization.

4889857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99807 (or 99800 counting only the distinct ones).

The product of its digits is 645120, while the sum is 49.

The square root of 4889857 is about 2211.3021050955. The cubic root of 4889857 is about 169.7326478171.

The spelling of 4889857 in words is "four million, eight hundred eighty-nine thousand, eight hundred fifty-seven".