4890043921 has 8 divisors (see below), whose sum is σ = 5598659520. Its totient is φ = 4183937808.

The previous prime is 4890043891. The next prime is 4890043933. The reversal of 4890043921 is 1293400984.

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 4890043921 - 2²⁵ = 4856489489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4890049921) 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 7 ways as a sum of consecutive naturals, for example, 623191 + ... + 630988.

It is an arithmetic number, because the mean of its divisors is an integer number (699832440).

Almost surely, 2^4890043921 is an apocalyptic number.

It is an amenable number.

4890043921 is a deficient number, since it is larger than the sum of its proper divisors (708615599).

4890043921 is a wasteful number, since it uses less digits than its factorization.

4890043921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254743.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 4890043921 is about 69928.8489895265. The cubic root of 4890043921 is about 1697.3481053829.

The spelling of 4890043921 in words is "four billion, eight hundred ninety million, forty-three thousand, nine hundred twenty-one".