404187456406 has 8 divisors (see below), whose sum is σ = 606300784344. Its totient is φ = 202087194960.

The previous prime is 404187456403. The next prime is 404187456473. The reversal of 404187456406 is 604654781404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 404187456406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404187456403) 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, 3188920 + ... + 3313243.

It is an arithmetic number, because the mean of its divisors is an integer number (75787598043).

Almost surely, 2^404187456406 is an apocalyptic number.

404187456406 is a deficient number, since it is larger than the sum of its proper divisors (202113327938).

404187456406 is a wasteful number, since it uses less digits than its factorization.

404187456406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6533246.

The product of its (nonzero) digits is 2580480, while the sum is 49.

The spelling of 404187456406 in words is "four hundred four billion, one hundred eighty-seven million, four hundred fifty-six thousand, four hundred six".