445947816 has 32 divisors (see below), whose sum is σ = 1142064000. Its totient is φ = 145023360.

The previous prime is 445947793. The next prime is 445947839. The reversal of 445947816 is 618749544.

It is an interprime number because it is at equal distance from previous prime (445947793) and next prime (445947839).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225616 + ... + 227583.

It is an arithmetic number, because the mean of its divisors is an integer number (35689500).

Almost surely, 2^445947816 is an apocalyptic number.

It is an amenable number.

445947816 is an abundant number, since it is smaller than the sum of its proper divisors (696116184).

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

445947816 is a wasteful number, since it uses less digits than its factorization.

445947816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453249 (or 453245 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 445947816 is about 21117.4765537931. The cubic root of 445947816 is about 764.0023254043.

The spelling of 445947816 in words is "four hundred forty-five million, nine hundred forty-seven thousand, eight hundred sixteen".