404894194971 has 16 divisors (see below), whose sum is σ = 619161786624. Its totient is φ = 230550552864.

The previous prime is 404894194949. The next prime is 404894195021. The reversal of 404894194971 is 179491498404.

It is not a de Polignac number, because 404894194971 - 2¹³ = 404894186779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404894194171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34058856 + ... + 34070741.

It is an arithmetic number, because the mean of its divisors is an integer number (38697611664).

Almost surely, 2^404894194971 is an apocalyptic number.

404894194971 is a deficient number, since it is larger than the sum of its proper divisors (214267591653).

404894194971 is a wasteful number, since it uses less digits than its factorization.

404894194971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68129890.

The product of its (nonzero) digits is 10450944, while the sum is 60.

The spelling of 404894194971 in words is "four hundred four billion, eight hundred ninety-four million, one hundred ninety-four thousand, nine hundred seventy-one".