4128399 has 36 divisors (see below), whose sum is σ = 6971328. Its totient is φ = 2344320.

The previous prime is 4128391. The next prime is 4128401. The reversal of 4128399 is 9938214.

It is not a de Polignac number, because 4128399 - 2³ = 4128391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18402 + ... + 18624.

It is an arithmetic number, because the mean of its divisors is an integer number (193648).

Almost surely, 2^4128399 is an apocalyptic number.

4128399 is a deficient number, since it is larger than the sum of its proper divisors (2842929).

4128399 is a wasteful number, since it uses less digits than its factorization.

4128399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 254 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 4128399 is about 2031.8462048098. The cubic root of 4128399 is about 160.4207545444.

The spelling of 4128399 in words is "four million, one hundred twenty-eight thousand, three hundred ninety-nine".