40267891 has 2 divisors, whose sum is σ = 40267892. Its totient is φ = 40267890.

The previous prime is 40267879. The next prime is 40267919. The reversal of 40267891 is 19876204.

40267891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40267891 - 2⁹ = 40267379 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 40267891.

It is not a weakly prime, because it can be changed into another prime (40267841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20133945 + 20133946.

It is an arithmetic number, because the mean of its divisors is an integer number (20133946).

Almost surely, 2^40267891 is an apocalyptic number.

40267891 is a deficient number, since it is larger than the sum of its proper divisors (1).

40267891 is an equidigital number, since it uses as much as digits as its factorization.

40267891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 40267891 is about 6345.6986219013. The cubic root of 40267891 is about 342.7569698506.

The spelling of 40267891 in words is "forty million, two hundred sixty-seven thousand, eight hundred ninety-one".