445519965 has 16 divisors (see below), whose sum is σ = 777635136. Its totient is φ = 216009600.

The previous prime is 445519939. The next prime is 445519973. The reversal of 445519965 is 569915544.

It is not a de Polignac number, because 445519965 - 2¹⁸ = 445257821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1349896 + ... + 1350225.

It is an arithmetic number, because the mean of its divisors is an integer number (48602196).

Almost surely, 2^445519965 is an apocalyptic number.

It is an amenable number.

445519965 is a deficient number, since it is larger than the sum of its proper divisors (332115171).

445519965 is a wasteful number, since it uses less digits than its factorization.

445519965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700140.

The product of its digits is 972000, while the sum is 48.

The square root of 445519965 is about 21107.3438641625. The cubic root of 445519965 is about 763.7579143312.

The spelling of 445519965 in words is "four hundred forty-five million, five hundred nineteen thousand, nine hundred sixty-five".