4042399 has 4 divisors (see below), whose sum is σ = 4051000. Its totient is φ = 4033800.

The previous prime is 4042393. The next prime is 4042417. The reversal of 4042399 is 9932404.

4042399 is nontrivially palindromic in base 4.

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 4042399 - 2³ = 4042391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4042399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042391) 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, 3552 + ... + 4549.

It is an arithmetic number, because the mean of its divisors is an integer number (1012750).

Almost surely, 2^4042399 is an apocalyptic number.

4042399 is a deficient number, since it is larger than the sum of its proper divisors (8601).

4042399 is an equidigital number, since it uses as much as digits as its factorization.

4042399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8600.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 4042399 is about 2010.5718092125. The cubic root of 4042399 is about 159.2990035728.

The spelling of 4042399 in words is "four million, forty-two thousand, three hundred ninety-nine".