40810961 has 2 divisors, whose sum is σ = 40810962. Its totient is φ = 40810960.

The previous prime is 40810937. The next prime is 40811003. The reversal of 40810961 is 16901804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23338561 + 17472400 = 4831^2 + 4180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40810961 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40813961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20405480 + 20405481.

It is an arithmetic number, because the mean of its divisors is an integer number (20405481).

Almost surely, 2^40810961 is an apocalyptic number.

It is an amenable number.

40810961 is a deficient number, since it is larger than the sum of its proper divisors (1).

40810961 is an equidigital number, since it uses as much as digits as its factorization.

40810961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 40810961 is about 6388.3457170069. The cubic root of 40810961 is about 344.2909501041.

The spelling of 40810961 in words is "forty million, eight hundred ten thousand, nine hundred sixty-one".