40786897 has 2 divisors, whose sum is σ = 40786898. Its totient is φ = 40786896.

The previous prime is 40786871. The next prime is 40786903. The reversal of 40786897 is 79868704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38427601 + 2359296 = 6199^2 + 1536^2 .

It is a cyclic number.

It is not a de Polignac number, because 40786897 - 2⁷ = 40786769 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40786897.

It is not a weakly prime, because it can be changed into another prime (40786817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20393448 + 20393449.

It is an arithmetic number, because the mean of its divisors is an integer number (20393449).

Almost surely, 2^40786897 is an apocalyptic number.

It is an amenable number.

40786897 is a deficient number, since it is larger than the sum of its proper divisors (1).

40786897 is an equidigital number, since it uses as much as digits as its factorization.

40786897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 40786897 is about 6386.4620095950. The cubic root of 40786897 is about 344.2232669281.

The spelling of 40786897 in words is "forty million, seven hundred eighty-six thousand, eight hundred ninety-seven".