445219 has 4 divisors (see below), whose sum is σ = 456120. Its totient is φ = 434320.

The previous prime is 445199. The next prime is 445229. The reversal of 445219 is 912544.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 445219 - 2⁵ = 445187 is a prime.

It is a super-2 number, since 2×445219² = 396439915922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 445193 and 445202.

It is not an unprimeable number, because it can be changed into a prime (445229) 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, 5389 + ... + 5470.

It is an arithmetic number, because the mean of its divisors is an integer number (114030).

2⁴⁴⁵²¹⁹ is an apocalyptic number.

445219 is a deficient number, since it is larger than the sum of its proper divisors (10901).

445219 is a wasteful number, since it uses less digits than its factorization.

445219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10900.

The product of its digits is 1440, while the sum is 25.

The square root of 445219 is about 667.2473304555. The cubic root of 445219 is about 76.3585893473.

It can be divided in two parts, 44521 and 9, that multiplied together give a square (400689 = 633²).

The spelling of 445219 in words is "four hundred forty-five thousand, two hundred nineteen".