445998415 has 4 divisors (see below), whose sum is σ = 535198104. Its totient is φ = 356798728.

The previous prime is 445998401. The next prime is 445998433. The reversal of 445998415 is 514899544.

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 445998415 - 2¹⁵ = 445965647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44599837 + ... + 44599846.

It is an arithmetic number, because the mean of its divisors is an integer number (133799526).

Almost surely, 2^445998415 is an apocalyptic number.

445998415 is a deficient number, since it is larger than the sum of its proper divisors (89199689).

445998415 is an equidigital number, since it uses as much as digits as its factorization.

445998415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89199688.

The product of its digits is 1036800, while the sum is 49.

The square root of 445998415 is about 21118.6745559469. The cubic root of 445998415 is about 764.0312198850.

The spelling of 445998415 in words is "four hundred forty-five million, nine hundred ninety-eight thousand, four hundred fifteen".