404254078885 has 8 divisors (see below), whose sum is σ = 485232677496. Its totient is φ = 323318074560.

The previous prime is 404254078861. The next prime is 404254078889. The reversal of 404254078885 is 588870452404.

It can be written as a sum of positive squares in 4 ways, for example, as 4993118244 + 399260960641 = 70662^2 + 631871^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 404254078885 - 2⁷ = 404254078757 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 (404254078889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10627686 + ... + 10665655.

It is an arithmetic number, because the mean of its divisors is an integer number (60654084687).

Almost surely, 2^404254078885 is an apocalyptic number.

It is an amenable number.

404254078885 is a deficient number, since it is larger than the sum of its proper divisors (80978598611).

404254078885 is a wasteful number, since it uses less digits than its factorization.

404254078885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21297143.

The product of its (nonzero) digits is 11468800, while the sum is 55.

The spelling of 404254078885 in words is "four hundred four billion, two hundred fifty-four million, seventy-eight thousand, eight hundred eighty-five".