40681847 has 2 divisors, whose sum is σ = 40681848. Its totient is φ = 40681846.

The previous prime is 40681841. The next prime is 40681853. The reversal of 40681847 is 74818604.

It is a balanced prime because it is at equal distance from previous prime (40681841) and next prime (40681853).

It is a cyclic number.

It is not a de Polignac number, because 40681847 - 2⁸ = 40681591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40681847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40681841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20340923 + 20340924.

It is an arithmetic number, because the mean of its divisors is an integer number (20340924).

Almost surely, 2^40681847 is an apocalyptic number.

40681847 is a deficient number, since it is larger than the sum of its proper divisors (1).

40681847 is an equidigital number, since it uses as much as digits as its factorization.

40681847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 40681847 is about 6378.2322786176. The cubic root of 40681847 is about 343.9274877583.

The spelling of 40681847 in words is "forty million, six hundred eighty-one thousand, eight hundred forty-seven".