40397941 has 4 divisors (see below), whose sum is σ = 41337472. Its totient is φ = 39458412.

The previous prime is 40397909. The next prime is 40397947. The reversal of 40397941 is 14979304.

40397941 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 40397941 - 2⁵ = 40397909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40397941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40397947) 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, 469701 + ... + 469786.

It is an arithmetic number, because the mean of its divisors is an integer number (10334368).

Almost surely, 2^40397941 is an apocalyptic number.

It is an amenable number.

40397941 is a deficient number, since it is larger than the sum of its proper divisors (939531).

40397941 is an equidigital number, since it uses as much as digits as its factorization.

40397941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939530.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 40397941 is about 6355.9374603594. The cubic root of 40397941 is about 343.1255649552.

The spelling of 40397941 in words is "forty million, three hundred ninety-seven thousand, nine hundred forty-one".