4027999 has 4 divisors (see below), whose sum is σ = 4049280. Its totient is φ = 4006720.

The previous prime is 4027993. The next prime is 4028009. The reversal of 4027999 is 9997204.

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 4027999 - 2¹⁵ = 3995231 is a prime.

It is a Duffinian number.

4027999 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4027993) 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, 10354 + ... + 10735.

It is an arithmetic number, because the mean of its divisors is an integer number (1012320).

Almost surely, 2^4027999 is an apocalyptic number.

4027999 is a deficient number, since it is larger than the sum of its proper divisors (21281).

4027999 is a wasteful number, since it uses less digits than its factorization.

4027999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21280.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 4027999 is about 2006.9875435588. The cubic root of 4027999 is about 159.1096247023.

The spelling of 4027999 in words is "four million, twenty-seven thousand, nine hundred ninety-nine".