445073210909 has 8 divisors (see below), whose sum is σ = 455820418872. Its totient is φ = 434413025280.

The previous prime is 445073210891. The next prime is 445073210947. The reversal of 445073210909 is 909012370544.

It can be written as a sum of positive squares in 4 ways, for example, as 61875070009 + 383198140900 = 248747^2 + 619030^2 .

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-445073210909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 445073210909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445073210999) 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, 21745232 + ... + 21765689.

It is an arithmetic number, because the mean of its divisors is an integer number (56977552359).

Almost surely, 2^445073210909 is an apocalyptic number.

It is an amenable number.

445073210909 is a deficient number, since it is larger than the sum of its proper divisors (10747207963).

445073210909 is a wasteful number, since it uses less digits than its factorization.

445073210909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43511167.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 445073210909 in words is "four hundred forty-five billion, seventy-three million, two hundred ten thousand, nine hundred nine".