2839691 has 2 divisors, whose sum is σ = 2839692. Its totient is φ = 2839690.

The previous prime is 2839657. The next prime is 2839699. The reversal of 2839691 is 1969382.

2839691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2839691 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2839699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1419845 + 1419846.

It is an arithmetic number, because the mean of its divisors is an integer number (1419846).

2^2839691 is an apocalyptic number.

2839691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2839691 is an equidigital number, since it uses as much as digits as its factorization.

2839691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 2839691 is about 1685.1382732583. The cubic root of 2839691 is about 141.6088388356.

The spelling of 2839691 in words is "two million, eight hundred thirty-nine thousand, six hundred ninety-one".