40897 has 2 divisors, whose sum is σ = 40898. Its totient is φ = 40896.

The previous prime is 40883. The next prime is 40903. The reversal of 40897 is 79804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39601 + 1296 = 199^2 + 36^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40897 is a prime.

It is a Chen prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (40847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20448 + 20449.

It is an arithmetic number, because the mean of its divisors is an integer number (20449).

2⁴⁰⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

40897 is a deficient number, since it is larger than the sum of its proper divisors (1).

40897 is an equidigital number, since it uses as much as digits as its factorization.

40897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 40897 is about 202.2300670029. The cubic root of 40897 is about 34.4532728748.

It can be divided in two parts, 4089 and 7, that added together give a 12-th power (4096 = 2¹²).

The spelling of 40897 in words is "forty thousand, eight hundred ninety-seven".