40635193 has 2 divisors, whose sum is σ = 40635194. Its totient is φ = 40635192.

The previous prime is 40635191. The next prime is 40635197. The reversal of 40635193 is 39153604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30118144 + 10517049 = 5488^2 + 3243^2 .

It is a cyclic number.

It is not a de Polignac number, because 40635193 - 2¹ = 40635191 is a prime.

Together with 40635191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40635191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20317596 + 20317597.

It is an arithmetic number, because the mean of its divisors is an integer number (20317597).

Almost surely, 2^40635193 is an apocalyptic number.

It is an amenable number.

40635193 is a deficient number, since it is larger than the sum of its proper divisors (1).

40635193 is an equidigital number, since it uses as much as digits as its factorization.

40635193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 40635193 is about 6374.5739465473. The cubic root of 40635193 is about 343.7959652914.

Adding to 40635193 its reverse (39153604), we get a palindrome (79788797).

The spelling of 40635193 in words is "forty million, six hundred thirty-five thousand, one hundred ninety-three".