404827912517 has 6 divisors (see below), whose sum is σ = 470922265638. Its totient is φ = 346995353544.

The previous prime is 404827912513. The next prime is 404827912519. The reversal of 404827912517 is 715219728404.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 395648548036 + 9179364481 = 629006^2 + 95809^2 .

It is not a de Polignac number, because 404827912517 - 2² = 404827912513 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 (404827912513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4130897018 + ... + 4130897115.

It is an arithmetic number, because the mean of its divisors is an integer number (78487044273).

Almost surely, 2^404827912517 is an apocalyptic number.

It is an amenable number.

404827912517 is a deficient number, since it is larger than the sum of its proper divisors (66094353121).

404827912517 is an equidigital number, since it uses as much as digits as its factorization.

404827912517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8261794147 (or 8261794140 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 404827912517 in words is "four hundred four billion, eight hundred twenty-seven million, nine hundred twelve thousand, five hundred seventeen".