445947307 has 8 divisors (see below), whose sum is σ = 495743360. Its totient is φ = 398364480.

The previous prime is 445947263. The next prime is 445947317. The reversal of 445947307 is 703749544.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 445947307 - 2¹⁹ = 445423019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445947317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552882 + ... + 553687.

It is an arithmetic number, because the mean of its divisors is an integer number (61967920).

Almost surely, 2^445947307 is an apocalyptic number.

445947307 is a deficient number, since it is larger than the sum of its proper divisors (49796053).

445947307 is a wasteful number, since it uses less digits than its factorization.

445947307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106613.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 445947307 is about 21117.4645021603. The cubic root of 445947307 is about 764.0020347296.

The spelling of 445947307 in words is "four hundred forty-five million, nine hundred forty-seven thousand, three hundred seven".