404621937801 has 27 divisors (see below), whose sum is σ = 598483325037. Its totient is φ = 263421317880.

The previous prime is 404621937793. The next prime is 404621937821. The reversal of 404621937801 is 108739126404.

The square root of 404621937801 is 636099.

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

It is not a de Polignac number, because 404621937801 - 2³ = 404621937793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404621937821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 82054306 + ... + 82059236.

Almost surely, 2^404621937801 is an apocalyptic number.

404621937801 is the 636099-th square number.

404621937801 is the 318050-th centered octagonal number.

It is an amenable number.

404621937801 is a deficient number, since it is larger than the sum of its proper divisors (193861387236).

404621937801 is an frugal number, since it uses more digits than its factorization.

404621937801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9954 (or 4977 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 404621937801 in words is "four hundred four billion, six hundred twenty-one million, nine hundred thirty-seven thousand, eight hundred one".