445989456 has 160 divisors (see below), whose sum is σ = 1409433600. Its totient is φ = 133902720.

The previous prime is 445989443. The next prime is 445989457. The reversal of 445989456 is 654989544.

445989456 is a `hidden beast` number, since 4 + 4 + 598 + 9 + 45 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445989457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 603135 + ... + 603873.

It is an arithmetic number, because the mean of its divisors is an integer number (8808960).

Almost surely, 2^445989456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445989456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (704716800).

445989456 is an abundant number, since it is smaller than the sum of its proper divisors (963444144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445989456 is a wasteful number, since it uses less digits than its factorization.

445989456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 882 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The square root of 445989456 is about 21118.4624440322. The cubic root of 445989456 is about 764.0261040211.

The spelling of 445989456 in words is "four hundred forty-five million, nine hundred eighty-nine thousand, four hundred fifty-six".