4899169821 has 16 divisors (see below), whose sum is σ = 8039663744. Its totient is φ = 2584177344.

The previous prime is 4899169789. The next prime is 4899169831. The reversal of 4899169821 is 1289619984.

It is not a de Polignac number, because 4899169821 - 2⁵ = 4899169789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4899169831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8972566 + ... + 8973111.

It is an arithmetic number, because the mean of its divisors is an integer number (502478984).

Almost surely, 2^4899169821 is an apocalyptic number.

It is an amenable number.

4899169821 is a deficient number, since it is larger than the sum of its proper divisors (3140493923).

4899169821 is a wasteful number, since it uses less digits than its factorization.

4899169821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17945700.

The product of its digits is 2239488, while the sum is 57.

The square root of 4899169821 is about 69994.0698988136. The cubic root of 4899169821 is about 1698.4033244832.

The spelling of 4899169821 in words is "four billion, eight hundred ninety-nine million, one hundred sixty-nine thousand, eight hundred twenty-one".