40809141 has 12 divisors (see below), whose sum is σ = 59248332. Its totient is φ = 27066816.

The previous prime is 40809137. The next prime is 40809157. The reversal of 40809141 is 14190804.

It can be written as a sum of positive squares in 2 ways, for example, as 33108516 + 7700625 = 5754^2 + 2775^2 .

It is not a de Polignac number, because 40809141 - 2² = 40809137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40809101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9736 + ... + 13281.

It is an arithmetic number, because the mean of its divisors is an integer number (4937361).

Almost surely, 2^40809141 is an apocalyptic number.

It is an amenable number.

40809141 is a deficient number, since it is larger than the sum of its proper divisors (18439191).

40809141 is a wasteful number, since it uses less digits than its factorization.

40809141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23220 (or 23217 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 40809141 is about 6388.2032685255. The cubic root of 40809141 is about 344.2858320440.

Adding to 40809141 its reverse (14190804), we get a palindrome (54999945).

The spelling of 40809141 in words is "forty million, eight hundred nine thousand, one hundred forty-one".