4999033861 has 4 divisors (see below), whose sum is σ = 5017617900. Its totient is φ = 4980449824.

The previous prime is 4999033859. The next prime is 4999033913. The reversal of 4999033861 is 1683309994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1683309994 = 2 ⋅841654997.

It can be written as a sum of positive squares in 2 ways, for example, as 1851150625 + 3147883236 = 43025^2 + 56106^2 .

It is a cyclic number.

It is not a de Polignac number, because 4999033861 - 2¹ = 4999033859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4999033799 and 4999033808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4999034861) 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, 9291616 + ... + 9292153.

It is an arithmetic number, because the mean of its divisors is an integer number (1254404475).

Almost surely, 2^4999033861 is an apocalyptic number.

It is an amenable number.

4999033861 is a deficient number, since it is larger than the sum of its proper divisors (18584039).

4999033861 is a wasteful number, since it uses less digits than its factorization.

4999033861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18584038.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The square root of 4999033861 is about 70703.8461542228. The cubic root of 4999033861 is about 1709.8658012853.

The spelling of 4999033861 in words is "four billion, nine hundred ninety-nine million, thirty-three thousand, eight hundred sixty-one".