40969697 has 2 divisors, whose sum is σ = 40969698. Its totient is φ = 40969696.

The previous prime is 40969679. The next prime is 40969729. The reversal of 40969697 is 79696904.

Together with previous prime (40969679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36372961 + 4596736 = 6031^2 + 2144^2 .

It is a cyclic number.

It is not a de Polignac number, because 40969697 - 2⁶ = 40969633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40969657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20484848 + 20484849.

It is an arithmetic number, because the mean of its divisors is an integer number (20484849).

Almost surely, 2^40969697 is an apocalyptic number.

It is an amenable number.

40969697 is a deficient number, since it is larger than the sum of its proper divisors (1).

40969697 is an equidigital number, since it uses as much as digits as its factorization.

40969697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 40969697 is about 6400.7575332924. The cubic root of 40969697 is about 344.7367508019.

The spelling of 40969697 in words is "forty million, nine hundred sixty-nine thousand, six hundred ninety-seven".