40695857 has 2 divisors, whose sum is σ = 40695858. Its totient is φ = 40695856.

The previous prime is 40695847. The next prime is 40695869. The reversal of 40695857 is 75859604.

40695857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30481441 + 10214416 = 5521^2 + 3196^2 .

It is a cyclic number.

It is not a de Polignac number, because 40695857 - 2⁶ = 40695793 is a prime.

It is not a weakly prime, because it can be changed into another prime (40695817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20347928 + 20347929.

It is an arithmetic number, because the mean of its divisors is an integer number (20347929).

Almost surely, 2^40695857 is an apocalyptic number.

It is an amenable number.

40695857 is a deficient number, since it is larger than the sum of its proper divisors (1).

40695857 is an equidigital number, since it uses as much as digits as its factorization.

40695857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 40695857 is about 6379.3304507605. The cubic root of 40695857 is about 343.9669637690.

The spelling of 40695857 in words is "forty million, six hundred ninety-five thousand, eight hundred fifty-seven".