445497819 has 32 divisors (see below), whose sum is σ = 656087040. Its totient is φ = 267176832.

The previous prime is 445497803. The next prime is 445497821. The reversal of 445497819 is 918794544.

It is not a de Polignac number, because 445497819 - 2⁴ = 445497803 is a prime.

It is a super-2 number, since 2×445497819² = 396936613467513522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445490819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657709 + ... + 658385.

It is an arithmetic number, because the mean of its divisors is an integer number (20502720).

Almost surely, 2^445497819 is an apocalyptic number.

445497819 is a deficient number, since it is larger than the sum of its proper divisors (210589221).

445497819 is a wasteful number, since it uses less digits than its factorization.

445497819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099.

The product of its digits is 1451520, while the sum is 51.

The square root of 445497819 is about 21106.8192535019. The cubic root of 445497819 is about 763.7452591086.

The spelling of 445497819 in words is "four hundred forty-five million, four hundred ninety-seven thousand, eight hundred nineteen".