404606186485 has 16 divisors (see below), whose sum is σ = 502295900400. Its totient is φ = 312507127296.

The previous prime is 404606186461. The next prime is 404606186489. The reversal of 404606186485 is 584681606404.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 113569674001 + 291036512484 = 337001^2 + 539478^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404606186485 is a prime.

It is a super-2 number, since 2×404606186485² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404606186489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3241411 + ... + 3363919.

It is an arithmetic number, because the mean of its divisors is an integer number (31393493775).

Almost surely, 2^404606186485 is an apocalyptic number.

It is an amenable number.

404606186485 is a deficient number, since it is larger than the sum of its proper divisors (97689713915).

404606186485 is a wasteful number, since it uses less digits than its factorization.

404606186485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145320.

The product of its (nonzero) digits is 4423680, while the sum is 52.

The spelling of 404606186485 in words is "four hundred four billion, six hundred six million, one hundred eighty-six thousand, four hundred eighty-five".