445003947 has 12 divisors (see below), whose sum is σ = 657732504. Its totient is φ = 289769760.

The previous prime is 445003907. The next prime is 445003961. The reversal of 445003947 is 749300544.

It is not a de Polignac number, because 445003947 - 2²³ = 436615339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (445003907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 574554 + ... + 575327.

It is an arithmetic number, because the mean of its divisors is an integer number (54811042).

Almost surely, 2^445003947 is an apocalyptic number.

445003947 is a deficient number, since it is larger than the sum of its proper divisors (212728557).

445003947 is a wasteful number, since it uses less digits than its factorization.

445003947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149930 (or 1149927 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 445003947 is about 21095.1166623937. The cubic root of 445003947 is about 763.4629293555.

The spelling of 445003947 in words is "four hundred forty-five million, three thousand, nine hundred forty-seven".