40644341 has 4 divisors (see below), whose sum is σ = 42045900. Its totient is φ = 39242784.

The previous prime is 40644337. The next prime is 40644347. The reversal of 40644341 is 14344604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30747025 + 9897316 = 5545^2 + 3146^2 .

It is a cyclic number.

It is not a de Polignac number, because 40644341 - 2² = 40644337 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 40644341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40644347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700736 + ... + 700793.

It is an arithmetic number, because the mean of its divisors is an integer number (10511475).

Almost surely, 2^40644341 is an apocalyptic number.

It is an amenable number.

40644341 is a deficient number, since it is larger than the sum of its proper divisors (1401559).

40644341 is a wasteful number, since it uses less digits than its factorization.

40644341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401558.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 40644341 is about 6375.2914443184. The cubic root of 40644341 is about 343.8217623840.

Adding to 40644341 its reverse (14344604), we get a palindrome (54988945).

The spelling of 40644341 in words is "forty million, six hundred forty-four thousand, three hundred forty-one".