408440440047 has 4 divisors (see below), whose sum is σ = 544587253400. Its totient is φ = 272293626696.

The previous prime is 408440440019. The next prime is 408440440153. The reversal of 408440440047 is 740044044804.

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

It is not a de Polignac number, because 408440440047 - 2⁶ = 408440439983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 408440439987 and 408440440014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408440448047) 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, 68073406672 + ... + 68073406677.

It is an arithmetic number, because the mean of its divisors is an integer number (136146813350).

Almost surely, 2^408440440047 is an apocalyptic number.

408440440047 is a deficient number, since it is larger than the sum of its proper divisors (136146813353).

408440440047 is a wasteful number, since it uses less digits than its factorization.

408440440047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136146813352.

The product of its (nonzero) digits is 229376, while the sum is 39.

The spelling of 408440440047 in words is "four hundred eight billion, four hundred forty million, four hundred forty thousand, forty-seven".