40082891 has 2 divisors, whose sum is σ = 40082892. Its totient is φ = 40082890.

The previous prime is 40082873. The next prime is 40082909. The reversal of 40082891 is 19828004.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (40082873) and next prime (40082909).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40082891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40082831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20041445 + 20041446.

It is an arithmetic number, because the mean of its divisors is an integer number (20041446).

Almost surely, 2^40082891 is an apocalyptic number.

40082891 is a deficient number, since it is larger than the sum of its proper divisors (1).

40082891 is an equidigital number, since it uses as much as digits as its factorization.

40082891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 40082891 is about 6331.1050378271. The cubic root of 40082891 is about 342.2312623679.

The spelling of 40082891 in words is "forty million, eighty-two thousand, eight hundred ninety-one".