40408141 has 4 divisors (see below), whose sum is σ = 40421052. Its totient is φ = 40395232.

The previous prime is 40408139. The next prime is 40408183. The reversal of 40408141 is 14180404.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 20738916 + 19669225 = 4554^2 + 4435^2 .

It is a cyclic number.

It is not a de Polignac number, because 40408141 - 2¹ = 40408139 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40408241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1545 + ... + 9121.

It is an arithmetic number, because the mean of its divisors is an integer number (10105263).

Almost surely, 2^40408141 is an apocalyptic number.

It is an amenable number.

40408141 is a deficient number, since it is larger than the sum of its proper divisors (12911).

40408141 is an equidigital number, since it uses as much as digits as its factorization.

40408141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12910.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 40408141 is about 6356.7398090531. The cubic root of 40408141 is about 343.1544409008.

Adding to 40408141 its reverse (14180404), we get a palindrome (54588545).

The spelling of 40408141 in words is "forty million, four hundred eight thousand, one hundred forty-one".