4939340021 has 16 divisors (see below), whose sum is σ = 6520383360. Its totient is φ = 3622433280.

The previous prime is 4939340009. The next prime is 4939340033. The reversal of 4939340021 is 1200439394.

It is an interprime number because it is at equal distance from previous prime (4939340009) and next prime (4939340033).

It is a cyclic number.

It is not a de Polignac number, because 4939340021 - 2¹⁰ = 4939338997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4939340041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1885376 + ... + 1887993.

It is an arithmetic number, because the mean of its divisors is an integer number (407523960).

Almost surely, 2^4939340021 is an apocalyptic number.

It is an amenable number.

4939340021 is a deficient number, since it is larger than the sum of its proper divisors (1581043339).

4939340021 is a wasteful number, since it uses less digits than its factorization.

4939340021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773404.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 4939340021 is about 70280.4383950470. The cubic root of 4939340021 is about 1703.0326515035.

The spelling of 4939340021 in words is "four billion, nine hundred thirty-nine million, three hundred forty thousand, twenty-one".