40893197 has 2 divisors, whose sum is σ = 40893198. Its totient is φ = 40893196.

The previous prime is 40893179. The next prime is 40893227. The reversal of 40893197 is 79139804.

It is a happy number.

Together with previous prime (40893179) 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., 22005481 + 18887716 = 4691^2 + 4346^2 .

It is a cyclic number.

It is not a de Polignac number, because 40893197 - 2⁶ = 40893133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40893997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20446598 + 20446599.

It is an arithmetic number, because the mean of its divisors is an integer number (20446599).

Almost surely, 2^40893197 is an apocalyptic number.

It is an amenable number.

40893197 is a deficient number, since it is larger than the sum of its proper divisors (1).

40893197 is an equidigital number, since it uses as much as digits as its factorization.

40893197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 40893197 is about 6394.7788859350. The cubic root of 40893197 is about 344.5220490844.

The spelling of 40893197 in words is "forty million, eight hundred ninety-three thousand, one hundred ninety-seven".