445971340 has 48 divisors (see below), whose sum is σ = 947116800. Its totient is φ = 176388032.

The previous prime is 445971313. The next prime is 445971341. The reversal of 445971340 is 43179544.

It is a super-2 number, since 2×445971340² = 397780872202791200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 445971340.

It is not an unprimeable number, because it can be changed into a prime (445971341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1242081 + ... + 1242439.

It is an arithmetic number, because the mean of its divisors is an integer number (19731600).

Almost surely, 2^445971340 is an apocalyptic number.

It is an amenable number.

445971340 is an abundant number, since it is smaller than the sum of its proper divisors (501145460).

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

445971340 is a wasteful number, since it uses less digits than its factorization.

445971340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 445971340 is about 21118.0335258755. The cubic root of 445971340 is about 764.0157590200.

The spelling of 445971340 in words is "four hundred forty-five million, nine hundred seventy-one thousand, three hundred forty".