4493139021 has 12 divisors (see below), whose sum is σ = 7417245472. Its totient is φ = 2567507976.

The previous prime is 4493138963. The next prime is 4493139061. The reversal of 4493139021 is 1209313944.

It is not a de Polignac number, because 4493139021 - 2⁶ = 4493138957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4493139061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35659771 + ... + 35659896.

Almost surely, 2^4493139021 is an apocalyptic number.

It is an amenable number.

4493139021 is a deficient number, since it is larger than the sum of its proper divisors (2924106451).

4493139021 is a wasteful number, since it uses less digits than its factorization.

4493139021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71319680 (or 71319677 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 4493139021 is about 67030.8810996842. The cubic root of 4493139021 is about 1650.1241438274.

The spelling of 4493139021 in words is "four billion, four hundred ninety-three million, one hundred thirty-nine thousand, twenty-one".