404017402 has 16 divisors (see below), whose sum is σ = 633608640. Its totient is φ = 193214076.

The previous prime is 404017391. The next prime is 404017417. The reversal of 404017402 is 204710404.

It is a super-2 number, since 2×404017402² = 326460122237659208, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16033 + ... + 32635.

It is an arithmetic number, because the mean of its divisors is an integer number (39600540).

Almost surely, 2^404017402 is an apocalyptic number.

404017402 is a deficient number, since it is larger than the sum of its proper divisors (229591238).

404017402 is an equidigital number, since it uses as much as digits as its factorization.

404017402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16674 (or 16628 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 404017402 is about 20100.1841285099. The cubic root of 404017402 is about 739.2647932939.

Adding to 404017402 its reverse (204710404), we get a palindrome (608727806).

The spelling of 404017402 in words is "four hundred four million, seventeen thousand, four hundred two".