40955813 has 2 divisors, whose sum is σ = 40955814. Its totient is φ = 40955812.

The previous prime is 40955807. The next prime is 40955819. The reversal of 40955813 is 31855904.

It is a balanced prime because it is at equal distance from previous prime (40955807) and next prime (40955819).

It can be written as a sum of positive squares in only one way, i.e., 21224449 + 19731364 = 4607^2 + 4442^2 .

It is a cyclic number.

It is not a de Polignac number, because 40955813 - 2⁶ = 40955749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40955819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20477906 + 20477907.

It is an arithmetic number, because the mean of its divisors is an integer number (20477907).

Almost surely, 2^40955813 is an apocalyptic number.

It is an amenable number.

40955813 is a deficient number, since it is larger than the sum of its proper divisors (1).

40955813 is an equidigital number, since it uses as much as digits as its factorization.

40955813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 40955813 is about 6399.6728822652. The cubic root of 40955813 is about 344.6978044084.

Subtracting from 40955813 its reverse (31855904), we obtain a palindrome (9099909).

The spelling of 40955813 in words is "forty million, nine hundred fifty-five thousand, eight hundred thirteen".