2979391 has 2 divisors, whose sum is σ = 2979392. Its totient is φ = 2979390.

The previous prime is 2979367. The next prime is 2979407. The reversal of 2979391 is 1939792.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2979391 - 2⁵ = 2979359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2979311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489695 + 1489696.

It is an arithmetic number, because the mean of its divisors is an integer number (1489696).

2^2979391 is an apocalyptic number.

2979391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2979391 is an equidigital number, since it uses as much as digits as its factorization.

2979391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 40.

The square root of 2979391 is about 1726.0912490364. The cubic root of 2979391 is about 143.8939387479.

The spelling of 2979391 in words is "two million, nine hundred seventy-nine thousand, three hundred ninety-one".