40397193 has 12 divisors (see below), whose sum is σ = 58518720. Its totient is φ = 26854296.

The previous prime is 40397191. The next prime is 40397197. The reversal of 40397193 is 39179304.

It is not a de Polignac number, because 40397193 - 2¹ = 40397191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40397191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3021 + ... + 9482.

It is an arithmetic number, because the mean of its divisors is an integer number (4876560).

Almost surely, 2^40397193 is an apocalyptic number.

It is an amenable number.

40397193 is a deficient number, since it is larger than the sum of its proper divisors (18121527).

40397193 is a wasteful number, since it uses less digits than its factorization.

40397193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12868 (or 12865 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 40397193 is about 6355.8786174690. The cubic root of 40397193 is about 343.1234471945.

The spelling of 40397193 in words is "forty million, three hundred ninety-seven thousand, one hundred ninety-three".