4128849 has 12 divisors (see below), whose sum is σ = 5997316. Its totient is φ = 2737152.

The previous prime is 4128829. The next prime is 4128857. The reversal of 4128849 is 9488214.

It can be written as a sum of positive squares in 2 ways, for example, as 1306449 + 2822400 = 1143^2 + 1680^2 .

It is not a de Polignac number, because 4128849 - 2¹² = 4124753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4128829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 549 + ... + 2925.

Almost surely, 2^4128849 is an apocalyptic number.

It is an amenable number.

4128849 is a deficient number, since it is larger than the sum of its proper divisors (1868467).

4128849 is a wasteful number, since it uses less digits than its factorization.

4128849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576 (or 2573 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 4128849 is about 2031.9569385201. The cubic root of 4128849 is about 160.4265830117.

It can be divided in two parts, 412 and 8849, that added together give a cube (9261 = 21³).

The spelling of 4128849 in words is "four million, one hundred twenty-eight thousand, eight hundred forty-nine".