401166404 has 6 divisors (see below), whose sum is σ = 702041214. Its totient is φ = 200583200.

The previous prime is 401166397. The next prime is 401166407. The reversal of 401166404 is 404661104.

It can be written as a sum of positive squares in only one way, i.e., 325441600 + 75724804 = 18040^2 + 8702^2 .

It is not an unprimeable number, because it can be changed into a prime (401166407) 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 as a sum of consecutive naturals, namely, 50145797 + ... + 50145804.

It is an arithmetic number, because the mean of its divisors is an integer number (117006869).

Almost surely, 2^401166404 is an apocalyptic number.

It is an amenable number.

401166404 is a deficient number, since it is larger than the sum of its proper divisors (300874810).

401166404 is a wasteful number, since it uses less digits than its factorization.

401166404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100291605 (or 100291603 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 401166404 is about 20029.1388731518. The cubic root of 401166404 is about 737.5217829054.

The spelling of 401166404 in words is "four hundred one million, one hundred sixty-six thousand, four hundred four".