2971839391 has 2 divisors, whose sum is σ = 2971839392. Its totient is φ = 2971839390.

The previous prime is 2971839383. The next prime is 2971839439. The reversal of 2971839391 is 1939381792.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2971839391 - 2³ = 2971839383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2971839331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1485919695 + 1485919696.

It is an arithmetic number, because the mean of its divisors is an integer number (1485919696).

Almost surely, 2^2971839391 is an apocalyptic number.

2971839391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2971839391 is an equidigital number, since it uses as much as digits as its factorization.

2971839391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 52.

The square root of 2971839391 is about 54514.5796186672. The cubic root of 2971839391 is about 1437.7226398044.

The spelling of 2971839391 in words is "two billion, nine hundred seventy-one million, eight hundred thirty-nine thousand, three hundred ninety-one".