404355122 has 4 divisors (see below), whose sum is σ = 606532686. Its totient is φ = 202177560.

The previous prime is 404355121. The next prime is 404355139. The reversal of 404355122 is 221553404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 327284281 + 77070841 = 18091^2 + 8779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 404355091 and 404355100.

It is not an unprimeable number, because it can be changed into a prime (404355121) 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, 101088779 + ... + 101088782.

Almost surely, 2^404355122 is an apocalyptic number.

404355122 is a deficient number, since it is larger than the sum of its proper divisors (202177564).

404355122 is a wasteful number, since it uses less digits than its factorization.

404355122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202177563.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 404355122 is about 20108.5832917190. The cubic root of 404355122 is about 739.4707208701.

The spelling of 404355122 in words is "four hundred four million, three hundred fifty-five thousand, one hundred twenty-two".