404788847 has 4 divisors (see below), whose sum is σ = 404950200. Its totient is φ = 404627496.

The previous prime is 404788841. The next prime is 404788849. The reversal of 404788847 is 748887404.

It is a happy number.

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 404788847 - 2¹⁴ = 404772463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404788795 and 404788804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404788841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76853 + ... + 81950.

It is an arithmetic number, because the mean of its divisors is an integer number (101237550).

Almost surely, 2^404788847 is an apocalyptic number.

404788847 is a deficient number, since it is larger than the sum of its proper divisors (161353).

404788847 is a wasteful number, since it uses less digits than its factorization.

404788847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161352.

The product of its (nonzero) digits is 1605632, while the sum is 50.

The square root of 404788847 is about 20119.3649750682. The cubic root of 404788847 is about 739.7350201746.

The spelling of 404788847 in words is "four hundred four million, seven hundred eighty-eight thousand, eight hundred forty-seven".