418649444 has 12 divisors (see below), whose sum is σ = 739891068. Its totient is φ = 207252000.

The previous prime is 418649437. The next prime is 418649459. The reversal of 418649444 is 444946814.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 275560000 + 143089444 = 16600^2 + 11962^2 .

It is a junction number, because it is equal to n+sod(n) for n = 418649395 and 418649404.

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 3 ways as a sum of consecutive naturals, for example, 517727 + ... + 518534.

It is an arithmetic number, because the mean of its divisors is an integer number (61657589).

Almost surely, 2^418649444 is an apocalyptic number.

It is an amenable number.

418649444 is a deficient number, since it is larger than the sum of its proper divisors (321241624).

418649444 is a wasteful number, since it uses less digits than its factorization.

418649444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036366 (or 1036364 counting only the distinct ones).

The product of its digits is 442368, while the sum is 44.

The square root of 418649444 is about 20460.9248080335. The cubic root of 418649444 is about 748.0836671355.

The spelling of 418649444 in words is "four hundred eighteen million, six hundred forty-nine thousand, four hundred forty-four".