404224445 has 8 divisors (see below), whose sum is σ = 498179544. Its totient is φ = 314639424.

The previous prime is 404224439. The next prime is 404224451. The reversal of 404224445 is 544422404.

It is an interprime number because it is at equal distance from previous prime (404224439) and next prime (404224451).

It can be written as a sum of positive squares in 4 ways, for example, as 234886276 + 169338169 = 15326^2 + 13013^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404224445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092314 + ... + 1092683.

It is an arithmetic number, because the mean of its divisors is an integer number (62272443).

Almost surely, 2^404224445 is an apocalyptic number.

It is an amenable number.

404224445 is a deficient number, since it is larger than the sum of its proper divisors (93955099).

404224445 is a wasteful number, since it uses less digits than its factorization.

404224445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185039.

The product of its (nonzero) digits is 20480, while the sum is 29.

The square root of 404224445 is about 20105.3337450538. Note that the first 3 decimals coincide. The cubic root of 404224445 is about 739.3910530883.

Adding to 404224445 its reverse (544422404), we get a palindrome (948646849).

The spelling of 404224445 in words is "four hundred four million, two hundred twenty-four thousand, four hundred forty-five".