408081071 has 4 divisors (see below), whose sum is σ = 409707144. Its totient is φ = 406455000.

The previous prime is 408081017. The next prime is 408081083. The reversal of 408081071 is 170180804.

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

It is a cyclic number.

It is not a de Polignac number, because 408081071 - 2¹⁰ = 408080047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408081001) 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, 812660 + ... + 813161.

It is an arithmetic number, because the mean of its divisors is an integer number (102426786).

Almost surely, 2^408081071 is an apocalyptic number.

408081071 is a deficient number, since it is larger than the sum of its proper divisors (1626073).

408081071 is a wasteful number, since it uses less digits than its factorization.

408081071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626072.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 408081071 is about 20201.0165833307. The cubic root of 408081071 is about 741.7350757812.

The spelling of 408081071 in words is "four hundred eight million, eighty-one thousand, seventy-one".