40840541 has 4 divisors (see below), whose sum is σ = 46674912. Its totient is φ = 35006172.

The previous prime is 40840531. The next prime is 40840543. The reversal of 40840541 is 14504804.

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 a de Polignac number, because none of the positive numbers 2^k-40840541 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 40840541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40840543) 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, 2917175 + ... + 2917188.

It is an arithmetic number, because the mean of its divisors is an integer number (11668728).

Almost surely, 2^40840541 is an apocalyptic number.

It is an amenable number.

40840541 is a deficient number, since it is larger than the sum of its proper divisors (5834371).

40840541 is an equidigital number, since it uses as much as digits as its factorization.

40840541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5834370.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 40840541 is about 6390.6604510019. The cubic root of 40840541 is about 344.3741113149.

The spelling of 40840541 in words is "forty million, eight hundred forty thousand, five hundred forty-one".