445203940 has 48 divisors (see below), whose sum is σ = 989714880. Its totient is φ = 167932800.

The previous prime is 445203931. The next prime is 445203959. The reversal of 445203940 is 49302544.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 16015 + ... + 33865.

It is an arithmetic number, because the mean of its divisors is an integer number (20619060).

Almost surely, 2^445203940 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 445203940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494857440).

445203940 is an abundant number, since it is smaller than the sum of its proper divisors (544510940).

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

445203940 is a wasteful number, since it uses less digits than its factorization.

445203940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17932 (or 17930 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 445203940 is about 21099.8563976156. The cubic root of 445203940 is about 763.5772836774.

The spelling of 445203940 in words is "four hundred forty-five million, two hundred three thousand, nine hundred forty".