445340303 has 4 divisors (see below), whose sum is σ = 446745480. Its totient is φ = 443935128.

The previous prime is 445340299. The next prime is 445340317. The reversal of 445340303 is 303043544.

It is a happy number.

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 445340303 - 2² = 445340299 is a prime.

It is a super-2 number, since 2×445340303² = 396655970952263618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445340323) 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, 702113 + ... + 702746.

It is an arithmetic number, because the mean of its divisors is an integer number (111686370).

Almost surely, 2^445340303 is an apocalyptic number.

445340303 is a deficient number, since it is larger than the sum of its proper divisors (1405177).

445340303 is a wasteful number, since it uses less digits than its factorization.

445340303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405176.

The product of its (nonzero) digits is 8640, while the sum is 26.

The square root of 445340303 is about 21103.0875229195. The cubic root of 445340303 is about 763.6552352638.

Adding to 445340303 its reverse (303043544), we get a palindrome (748383847).

The spelling of 445340303 in words is "four hundred forty-five million, three hundred forty thousand, three hundred three".