4899981 has 8 divisors (see below), whose sum is σ = 6567264. Its totient is φ = 3249680.

The previous prime is 4899971. The next prime is 4899997. The reversal of 4899981 is 1899984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4899981 - 2¹¹ = 4897933 is a prime.

It is a super-2 number, since 2×4899981² = 48019627600722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4899981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4899931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3555 + ... + 4736.

It is an arithmetic number, because the mean of its divisors is an integer number (820908).

Almost surely, 2^4899981 is an apocalyptic number.

It is an amenable number.

4899981 is a deficient number, since it is larger than the sum of its proper divisors (1667283).

4899981 is a wasteful number, since it uses less digits than its factorization.

4899981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8491.

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

The square root of 4899981 is about 2213.5900704512. The cubic root of 4899981 is about 169.8497056900.

The spelling of 4899981 in words is "four million, eight hundred ninety-nine thousand, nine hundred eighty-one".