40344197 has 4 divisors (see below), whose sum is σ = 40487040. Its totient is φ = 40201356.

The previous prime is 40344181. The next prime is 40344203. The reversal of 40344197 is 79144304.

It is a happy number.

40344197 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 40344197 - 2⁴ = 40344181 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 (40344167) 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, 70997 + ... + 71562.

It is an arithmetic number, because the mean of its divisors is an integer number (10121760).

Almost surely, 2^40344197 is an apocalyptic number.

It is an amenable number.

40344197 is a deficient number, since it is larger than the sum of its proper divisors (142843).

40344197 is a wasteful number, since it uses less digits than its factorization.

40344197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142842.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 40344197 is about 6351.7081954385. The cubic root of 40344197 is about 342.9733367006.

The spelling of 40344197 in words is "forty million, three hundred forty-four thousand, one hundred ninety-seven".