40318847 has 2 divisors, whose sum is σ = 40318848. Its totient is φ = 40318846.

The previous prime is 40318813. The next prime is 40318877. The reversal of 40318847 is 74881304.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40318847 - 2⁶ = 40318783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40318807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20159423 + 20159424.

It is an arithmetic number, because the mean of its divisors is an integer number (20159424).

Almost surely, 2^40318847 is an apocalyptic number.

40318847 is a deficient number, since it is larger than the sum of its proper divisors (1).

40318847 is an equidigital number, since it uses as much as digits as its factorization.

40318847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 40318847 is about 6349.7123556898. The cubic root of 40318847 is about 342.9014866669.

The spelling of 40318847 in words is "forty million, three hundred eighteen thousand, eight hundred forty-seven".