4165899 has 4 divisors (see below), whose sum is σ = 5554536. Its totient is φ = 2777264.

The previous prime is 4165849. The next prime is 4165927. The reversal of 4165899 is 9985614.

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 4165899 - 2⁸ = 4165643 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 4165899.

It is not an unprimeable number, because it can be changed into a prime (4165849) 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, 694314 + ... + 694319.

It is an arithmetic number, because the mean of its divisors is an integer number (1388634).

Almost surely, 2^4165899 is an apocalyptic number.

4165899 is a deficient number, since it is larger than the sum of its proper divisors (1388637).

4165899 is a wasteful number, since it uses less digits than its factorization.

4165899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388636.

The product of its digits is 77760, while the sum is 42.

The square root of 4165899 is about 2041.0534044948. The cubic root of 4165899 is about 160.9050145071.

Adding to 4165899 its sum of digits (42), we get a triangular number (4165941 = T₂₈₈₆).

The spelling of 4165899 in words is "four million, one hundred sixty-five thousand, eight hundred ninety-nine".