405898958404 has 27 divisors (see below), whose sum is σ = 712899040413. Its totient is φ = 202216174800.

The previous prime is 405898958401. The next prime is 405898958411. The reversal of 405898958404 is 404859898504.

The square root of 405898958404 is 637102.

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., 130105932804 + 275793025600 = 360702^2 + 525160^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405898958401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 587407699 + ... + 587408389.

Almost surely, 2^405898958404 is an apocalyptic number.

405898958404 is the 637102-nd square number.

It is an amenable number.

405898958404 is a deficient number, since it is larger than the sum of its proper divisors (307000082009).

405898958404 is an frugal number, since it uses more digits than its factorization.

405898958404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 64.

Multiplying 405898958404 by its sum of digits (64), we get a square (25977533337856 = 5096816²).

The spelling of 405898958404 in words is "four hundred five billion, eight hundred ninety-eight million, nine hundred fifty-eight thousand, four hundred four".