404894884 has 9 divisors (see below), whose sum is σ = 708636481. Its totient is φ = 202427320.

The previous prime is 404894879. The next prime is 404894911. The reversal of 404894884 is 488498404.

The square root of 404894884 is 20122.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 231709284 + 173185600 = 15222^2 + 13160^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 35214 + ... + 45274.

Almost surely, 2^404894884 is an apocalyptic number.

404894884 is the 20122-nd square number.

It is an amenable number.

404894884 is a deficient number, since it is larger than the sum of its proper divisors (303741597).

404894884 is an frugal number, since it uses more digits than its factorization.

404894884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20126 (or 10063 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 49.

The cubic root of 404894884 is about 739.7996072918.

Multiplying 404894884 by its sum of digits (49), we get a square (19839849316 = 140854²).

The spelling of 404894884 in words is "four hundred four million, eight hundred ninety-four thousand, eight hundred eighty-four".