4945679869 has 4 divisors (see below), whose sum is σ = 5326116796. Its totient is φ = 4565242944.

The previous prime is 4945679771. The next prime is 4945679929. The reversal of 4945679869 is 9689765494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9689765494 = 2 ⋅4844882747.

It can be written as a sum of positive squares in 2 ways, for example, as 347076900 + 4598602969 = 18630^2 + 67813^2 .

It is a cyclic number.

It is not a de Polignac number, because 4945679869 - 2⁷ = 4945679741 is a prime.

It is a super-2 number, since 2×4945679869² = 48919498733263714322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4945679569) 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, 190218444 + ... + 190218469.

It is an arithmetic number, because the mean of its divisors is an integer number (1331529199).

Almost surely, 2^4945679869 is an apocalyptic number.

It is an amenable number.

4945679869 is a deficient number, since it is larger than the sum of its proper divisors (380436927).

4945679869 is a wasteful number, since it uses less digits than its factorization.

4945679869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380436926.

The product of its digits is 117573120, while the sum is 67.

The square root of 4945679869 is about 70325.5278615099. The cubic root of 4945679869 is about 1703.7609776863.

The spelling of 4945679869 in words is "four billion, nine hundred forty-five million, six hundred seventy-nine thousand, eight hundred sixty-nine".