445005247 has 8 divisors (see below), whose sum is σ = 451407600. Its totient is φ = 438627840.

The previous prime is 445005241. The next prime is 445005263. The reversal of 445005247 is 742500544.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445005247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445005241) 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, 31297 + ... + 43237.

It is an arithmetic number, because the mean of its divisors is an integer number (56425950).

Almost surely, 2^445005247 is an apocalyptic number.

445005247 is a deficient number, since it is larger than the sum of its proper divisors (6402353).

445005247 is a wasteful number, since it uses less digits than its factorization.

445005247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12473.

The product of its (nonzero) digits is 22400, while the sum is 31.

The square root of 445005247 is about 21095.1474751896. The cubic root of 445005247 is about 763.4636727952.

The spelling of 445005247 in words is "four hundred forty-five million, five thousand, two hundred forty-seven".