4999806986 has 4 divisors (see below), whose sum is σ = 7499710482. Its totient is φ = 2499903492.

The previous prime is 4999806979. The next prime is 4999806997. The reversal of 4999806986 is 6896089994.

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

It can be written as a sum of positive squares in only one way, i.e., 4999197025 + 609961 = 70705^2 + 781^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249951745 + ... + 1249951748.

Almost surely, 2^4999806986 is an apocalyptic number.

4999806986 is a deficient number, since it is larger than the sum of its proper divisors (2499903496).

4999806986 is a wasteful number, since it uses less digits than its factorization.

4999806986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499903495.

The product of its (nonzero) digits is 60466176, while the sum is 68.

The square root of 4999806986 is about 70709.3132904004. The cubic root of 4999806986 is about 1709.9539431071.

The spelling of 4999806986 in words is "four billion, nine hundred ninety-nine million, eight hundred six thousand, nine hundred eighty-six".