40017197 has 4 divisors (see below), whose sum is σ = 43655136. Its totient is φ = 36379260.

The previous prime is 40017169. The next prime is 40017209. The reversal of 40017197 is 79171004.

40017197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40017197 - 2¹⁰ = 40016173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40017137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1818953 + ... + 1818974.

It is an arithmetic number, because the mean of its divisors is an integer number (10913784).

Almost surely, 2^40017197 is an apocalyptic number.

It is an amenable number.

40017197 is a deficient number, since it is larger than the sum of its proper divisors (3637939).

40017197 is a wasteful number, since it uses less digits than its factorization.

40017197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637938.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 40017197 is about 6325.9147164659. The cubic root of 40017197 is about 342.0441930740.

The spelling of 40017197 in words is "forty million, seventeen thousand, one hundred ninety-seven".