40771391 has 2 divisors, whose sum is σ = 40771392. Its totient is φ = 40771390.

The previous prime is 40771351. The next prime is 40771421. The reversal of 40771391 is 19317704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40771391 - 2⁶ = 40771327 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 (40771351) 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, 20385695 + 20385696.

It is an arithmetic number, because the mean of its divisors is an integer number (20385696).

Almost surely, 2^40771391 is an apocalyptic number.

40771391 is a deficient number, since it is larger than the sum of its proper divisors (1).

40771391 is an equidigital number, since it uses as much as digits as its factorization.

40771391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 40771391 is about 6385.2479200106. The cubic root of 40771391 is about 344.1796401517.

The spelling of 40771391 in words is "forty million, seven hundred seventy-one thousand, three hundred ninety-one".