4998891 has 4 divisors (see below), whose sum is σ = 6665192. Its totient is φ = 3332592.

The previous prime is 4998887. The next prime is 4998911. The reversal of 4998891 is 1988994.

4998891 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 4998891 - 2² = 4998887 is a prime.

It is a super-2 number, since 2×4998891² = 49977822459762, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

4998891 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4998891.

It is not an unprimeable number, because it can be changed into a prime (4990891) 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, 833146 + ... + 833151.

It is an arithmetic number, because the mean of its divisors is an integer number (1666298).

Almost surely, 2^4998891 is an apocalyptic number.

4998891 is a deficient number, since it is larger than the sum of its proper divisors (1666301).

4998891 is a wasteful number, since it uses less digits than its factorization.

4998891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666300.

The product of its digits is 186624, while the sum is 48.

The square root of 4998891 is about 2235.8199838091. The cubic root of 4998891 is about 170.9849513107.

The spelling of 4998891 in words is "four million, nine hundred ninety-eight thousand, eight hundred ninety-one".