445312973 has 4 divisors (see below), whose sum is σ = 508929120. Its totient is φ = 381696828.

The previous prime is 445312957. The next prime is 445313003. The reversal of 445312973 is 379213544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 445312973 - 2⁴ = 445312957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445312073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31808063 + ... + 31808076.

It is an arithmetic number, because the mean of its divisors is an integer number (127232280).

Almost surely, 2^445312973 is an apocalyptic number.

It is an amenable number.

445312973 is a deficient number, since it is larger than the sum of its proper divisors (63616147).

445312973 is an equidigital number, since it uses as much as digits as its factorization.

445312973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63616146.

The product of its digits is 90720, while the sum is 38.

The square root of 445312973 is about 21102.4399774055. The cubic root of 445312973 is about 763.6396134091.

The spelling of 445312973 in words is "four hundred forty-five million, three hundred twelve thousand, nine hundred seventy-three".