4049999 has 4 divisors (see below), whose sum is σ = 4090200. Its totient is φ = 4009800.

The previous prime is 4049989. The next prime is 4050019. The reversal of 4049999 is 9999404.

It is a happy number.

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 4049999 - 2⁸ = 4049743 is a prime.

It is a Duffinian number.

4049999 is a modest number, since divided by 9999 gives 404 as remainder.

It is a plaindrome in base 6.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4049959) 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, 19949 + ... + 20150.

It is an arithmetic number, because the mean of its divisors is an integer number (1022550).

Almost surely, 2^4049999 is an apocalyptic number.

4049999 is a deficient number, since it is larger than the sum of its proper divisors (40201).

4049999 is a wasteful number, since it uses less digits than its factorization.

4049999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40200.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 4049999 is about 2012.4609312978. The cubic root of 4049999 is about 159.3987722581.

The spelling of 4049999 in words is "four million, forty-nine thousand, nine hundred ninety-nine".