40976981 has 2 divisors, whose sum is σ = 40976982. Its totient is φ = 40976980.

The previous prime is 40976927. The next prime is 40977043. The reversal of 40976981 is 18967904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40322500 + 654481 = 6350^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 40976981 - 2²² = 36782677 is a prime.

It is a super-2 number, since 2×40976981² = 3358225943748722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40976911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20488490 + 20488491.

It is an arithmetic number, because the mean of its divisors is an integer number (20488491).

Almost surely, 2^40976981 is an apocalyptic number.

It is an amenable number.

40976981 is a deficient number, since it is larger than the sum of its proper divisors (1).

40976981 is an equidigital number, since it uses as much as digits as its factorization.

40976981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 40976981 is about 6401.3265031554. The cubic root of 40976981 is about 344.7571798334.

The spelling of 40976981 in words is "forty million, nine hundred seventy-six thousand, nine hundred eighty-one".