40503939841 has 4 divisors (see below), whose sum is σ = 40506057684. Its totient is φ = 40501822000.

The previous prime is 40503939829. The next prime is 40503939851. The reversal of 40503939841 is 14893930504.

It is a happy number.

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 22736116225 + 17767823616 = 150785^2 + 133296^2 .

It is a cyclic number.

It is not a de Polignac number, because 40503939841 - 2³⁵ = 6144201473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40503939791 and 40503939800.

It is not an unprimeable number, because it can be changed into a prime (40503939851) 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, 1029970 + ... + 1068571.

It is an arithmetic number, because the mean of its divisors is an integer number (10126514421).

Almost surely, 2^40503939841 is an apocalyptic number.

It is an amenable number.

40503939841 is a deficient number, since it is larger than the sum of its proper divisors (2117843).

40503939841 is a wasteful number, since it uses less digits than its factorization.

40503939841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117842.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 40503939841 in words is "forty billion, five hundred three million, nine hundred thirty-nine thousand, eight hundred forty-one".