2939891 has 2 divisors, whose sum is σ = 2939892. Its totient is φ = 2939890.

The previous prime is 2939879. The next prime is 2939899. The reversal of 2939891 is 1989392.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2939891 - 2¹⁸ = 2677747 is a prime.

It is not a weakly prime, because it can be changed into another prime (2939899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1469945 + 1469946.

It is an arithmetic number, because the mean of its divisors is an integer number (1469946).

2^2939891 is an apocalyptic number.

2939891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2939891 is an equidigital number, since it uses as much as digits as its factorization.

2939891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 41.

The square root of 2939891 is about 1714.6110346081. The cubic root of 2939891 is about 143.2552047019.

The spelling of 2939891 in words is "two million, nine hundred thirty-nine thousand, eight hundred ninety-one".