404382383691 has 48 divisors (see below), whose sum is σ = 638374961952. Its totient is φ = 226178979840.

The previous prime is 404382383659. The next prime is 404382383711. The reversal of 404382383691 is 196383283404.

It is not a de Polignac number, because 404382383691 - 2⁵ = 404382383659 is a prime.

It is a super-2 number, since 2×404382383691² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404382383191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41696955 + ... + 41706651.

It is an arithmetic number, because the mean of its divisors is an integer number (13299478374).

Almost surely, 2^404382383691 is an apocalyptic number.

404382383691 is a deficient number, since it is larger than the sum of its proper divisors (233992578261).

404382383691 is a wasteful number, since it uses less digits than its factorization.

404382383691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18572 (or 18561 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 51.

The spelling of 404382383691 in words is "four hundred four billion, three hundred eighty-two million, three hundred eighty-three thousand, six hundred ninety-one".