404042228 has 6 divisors (see below), whose sum is σ = 707073906. Its totient is φ = 202021112.

The previous prime is 404042209. The next prime is 404042231. The reversal of 404042228 is 822240404.

It can be written as a sum of positive squares in only one way, i.e., 319622884 + 84419344 = 17878^2 + 9188^2 .

It is a junction number, because it is equal to n+sod(n) for n = 404042197 and 404042206.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 50505275 + ... + 50505282.

It is an arithmetic number, because the mean of its divisors is an integer number (117845651).

Almost surely, 2^404042228 is an apocalyptic number.

It is an amenable number.

404042228 is a deficient number, since it is larger than the sum of its proper divisors (303031678).

404042228 is a wasteful number, since it uses less digits than its factorization.

404042228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101010561 (or 101010559 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 404042228 is about 20100.8016755551. The cubic root of 404042228 is about 739.2799350607.

The spelling of 404042228 in words is "four hundred four million, forty-two thousand, two hundred twenty-eight".