440521448 has 8 divisors (see below), whose sum is σ = 825977730. Its totient is φ = 220260720.

The previous prime is 440521423. The next prime is 440521453. The reversal of 440521448 is 844125044.

It can be written as a sum of positive squares in only one way, i.e., 359557444 + 80964004 = 18962^2 + 8998^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×440521448² = 388118292296033408, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 27532583 + ... + 27532598.

Almost surely, 2^440521448 is an apocalyptic number.

It is an amenable number.

440521448 is a deficient number, since it is larger than the sum of its proper divisors (385456282).

440521448 is a wasteful number, since it uses less digits than its factorization.

440521448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55065187 (or 55065183 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 32.

The square root of 440521448 is about 20988.6028120025. The cubic root of 440521448 is about 760.8908344396.

The spelling of 440521448 in words is "four hundred forty million, five hundred twenty-one thousand, four hundred forty-eight".