445340215 has 4 divisors (see below), whose sum is σ = 534408264. Its totient is φ = 356272168.

The previous prime is 445340213. The next prime is 445340227. The reversal of 445340215 is 512043544.

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 445340215 - 2¹ = 445340213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445340213) 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, 44534017 + ... + 44534026.

It is an arithmetic number, because the mean of its divisors is an integer number (133602066).

Almost surely, 2^445340215 is an apocalyptic number.

445340215 is a deficient number, since it is larger than the sum of its proper divisors (89068049).

445340215 is an equidigital number, since it uses as much as digits as its factorization.

445340215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89068048.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 445340215 is about 21103.0854379164. The cubic root of 445340215 is about 763.6551849639.

Adding to 445340215 its reverse (512043544), we get a palindrome (957383759).

The spelling of 445340215 in words is "four hundred forty-five million, three hundred forty thousand, two hundred fifteen".