404405601 has 4 divisors (see below), whose sum is σ = 539207472. Its totient is φ = 269603732.

The previous prime is 404405593. The next prime is 404405621. The reversal of 404405601 is 106504404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404405601 - 2³ = 404405593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404405621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67400931 + ... + 67400936.

It is an arithmetic number, because the mean of its divisors is an integer number (134801868).

Almost surely, 2^404405601 is an apocalyptic number.

It is an amenable number.

404405601 is a deficient number, since it is larger than the sum of its proper divisors (134801871).

404405601 is a wasteful number, since it uses less digits than its factorization.

404405601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134801870.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 404405601 is about 20109.8384130753. The cubic root of 404405601 is about 739.5014910086.

The spelling of 404405601 in words is "four hundred four million, four hundred five thousand, six hundred one".