447640244 has 6 divisors (see below), whose sum is σ = 783370434. Its totient is φ = 223820120.

The previous prime is 447640241. The next prime is 447640261. The reversal of 447640244 is 442046744.

It can be written as a sum of positive squares in only one way, i.e., 390062500 + 57577744 = 19750^2 + 7588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447640241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55955027 + ... + 55955034.

It is an arithmetic number, because the mean of its divisors is an integer number (130561739).

Almost surely, 2^447640244 is an apocalyptic number.

It is an amenable number.

447640244 is a deficient number, since it is larger than the sum of its proper divisors (335730190).

447640244 is a wasteful number, since it uses less digits than its factorization.

447640244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111910065 (or 111910063 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 35.

The square root of 447640244 is about 21157.5103450288. The cubic root of 447640244 is about 764.9676002625.

Adding to 447640244 its reverse (442046744), we get a palindrome (889686988).

The spelling of 447640244 in words is "four hundred forty-seven million, six hundred forty thousand, two hundred forty-four".