404406727 has 16 divisors (see below), whose sum is σ = 434382912. Its totient is φ = 375155200.

The previous prime is 404406661. The next prime is 404406731. The reversal of 404406727 is 727604404.

It is a cyclic number.

It is not a de Polignac number, because 404406727 - 2⁷ = 404406599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404406692 and 404406701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404406757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543918 + ... + 544660.

It is an arithmetic number, because the mean of its divisors is an integer number (27148932).

Almost surely, 2^404406727 is an apocalyptic number.

404406727 is a deficient number, since it is larger than the sum of its proper divisors (29976185).

404406727 is a wasteful number, since it uses less digits than its factorization.

404406727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178.

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 404406727 is about 20109.8664093027. The cubic root of 404406727 is about 739.5021773476.

The spelling of 404406727 in words is "four hundred four million, four hundred six thousand, seven hundred twenty-seven".