2939836021 has 8 divisors (see below), whose sum is σ = 2969620704. Its totient is φ = 2910094320.

The previous prime is 2939836001. The next prime is 2939836033. The reversal of 2939836021 is 1206389392.

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 2939836021 - 2¹⁷ = 2939704949 is a prime.

It is a super-2 number, since 2×2939836021² = 17285271660738224882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2939836001) 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 7 ways as a sum of consecutive naturals, for example, 136906 + ... + 156916.

It is an arithmetic number, because the mean of its divisors is an integer number (371202588).

Almost surely, 2^2939836021 is an apocalyptic number.

It is an amenable number.

2939836021 is a deficient number, since it is larger than the sum of its proper divisors (29784683).

2939836021 is a wasteful number, since it uses less digits than its factorization.

2939836021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21491.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 2939836021 is about 54220.2547116850. The cubic root of 2939836021 is about 1432.5431168956.

The spelling of 2939836021 in words is "two billion, nine hundred thirty-nine million, eight hundred thirty-six thousand, twenty-one".