40396771 has 2 divisors, whose sum is σ = 40396772. Its totient is φ = 40396770.

The previous prime is 40396757. The next prime is 40396781. The reversal of 40396771 is 17769304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40396771 - 2⁹ = 40396259 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40396771.

It is not a weakly prime, because it can be changed into another prime (40396781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20198385 + 20198386.

It is an arithmetic number, because the mean of its divisors is an integer number (20198386).

Almost surely, 2^40396771 is an apocalyptic number.

40396771 is a deficient number, since it is larger than the sum of its proper divisors (1).

40396771 is an equidigital number, since it uses as much as digits as its factorization.

40396771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 40396771 is about 6355.8454197691. The cubic root of 40396771 is about 343.1222524036.

The spelling of 40396771 in words is "forty million, three hundred ninety-six thousand, seven hundred seventy-one".