4249806863 has 4 divisors (see below), whose sum is σ = 4499795520. Its totient is φ = 3999818208.

The previous prime is 4249806839. The next prime is 4249806901. The reversal of 4249806863 is 3686089424.

It is a happy number.

4249806863 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4249806863 - 2²⁰ = 4248758287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4249806823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124994303 + ... + 124994336.

It is an arithmetic number, because the mean of its divisors is an integer number (1124948880).

Almost surely, 2^4249806863 is an apocalyptic number.

4249806863 is a deficient number, since it is larger than the sum of its proper divisors (249988657).

4249806863 is a wasteful number, since it uses less digits than its factorization.

4249806863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249988656.

The product of its (nonzero) digits is 1990656, while the sum is 50.

The square root of 4249806863 is about 65190.5427420266. The cubic root of 4249806863 is about 1619.7813634473.

The spelling of 4249806863 in words is "four billion, two hundred forty-nine million, eight hundred six thousand, eight hundred sixty-three".