4945239849 has 16 divisors (see below), whose sum is σ = 7279743744. Its totient is φ = 2961003600.

The previous prime is 4945239841. The next prime is 4945239863. The reversal of 4945239849 is 9489325494.

4945239849 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4945239849 - 2³ = 4945239841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4945239841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900007 + ... + 905484.

It is an arithmetic number, because the mean of its divisors is an integer number (454983984).

Almost surely, 2^4945239849 is an apocalyptic number.

It is an amenable number.

4945239849 is a deficient number, since it is larger than the sum of its proper divisors (2334503895).

4945239849 is a wasteful number, since it uses less digits than its factorization.

4945239849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805588.

The product of its digits is 11197440, while the sum is 57.

The square root of 4945239849 is about 70322.3993404662. The cubic root of 4945239849 is about 1703.7104479876.

The spelling of 4945239849 in words is "four billion, nine hundred forty-five million, two hundred thirty-nine thousand, eight hundred forty-nine".