2077391 has 2 divisors, whose sum is σ = 2077392. Its totient is φ = 2077390.

The previous prime is 2077367. The next prime is 2077399. The reversal of 2077391 is 1937702.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2077391 - 2¹⁰ = 2076367 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2077399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1038695 + 1038696.

It is an arithmetic number, because the mean of its divisors is an integer number (1038696).

2^2077391 is an apocalyptic number.

2077391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2077391 is an equidigital number, since it uses as much as digits as its factorization.

2077391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 2077391 is about 1441.3157183629. The cubic root of 2077391 is about 127.5966919999.

The spelling of 2077391 in words is "two million, seventy-seven thousand, three hundred ninety-one".