404224778 has 8 divisors (see below), whose sum is σ = 622724772. Its totient is φ = 196649856.

The previous prime is 404224729. The next prime is 404224801. The reversal of 404224778 is 877422404.

It can be written as a sum of positive squares in 2 ways, for example, as 358079929 + 46144849 = 18923^2 + 6793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×404224778² = 326795342298298568, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2731175 + ... + 2731322.

Almost surely, 2^404224778 is an apocalyptic number.

404224778 is a deficient number, since it is larger than the sum of its proper divisors (218499994).

404224778 is a wasteful number, since it uses less digits than its factorization.

404224778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462536.

The product of its (nonzero) digits is 100352, while the sum is 38.

The square root of 404224778 is about 20105.3420264367. The cubic root of 404224778 is about 739.3912561250.

The spelling of 404224778 in words is "four hundred four million, two hundred twenty-four thousand, seven hundred seventy-eight".