445122403 has 4 divisors (see below), whose sum is σ = 485588088. Its totient is φ = 404656720.

The previous prime is 445122401. The next prime is 445122409. The reversal of 445122403 is 304221544.

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 445122403 - 2¹ = 445122401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445122401) 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, 20232826 + ... + 20232847.

It is an arithmetic number, because the mean of its divisors is an integer number (121397022).

Almost surely, 2^445122403 is an apocalyptic number.

445122403 is a deficient number, since it is larger than the sum of its proper divisors (40465685).

445122403 is a wasteful number, since it uses less digits than its factorization.

445122403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40465684.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 445122403 is about 21097.9241395925. The cubic root of 445122403 is about 763.5306656397.

Adding to 445122403 its reverse (304221544), we get a palindrome (749343947).

The spelling of 445122403 in words is "four hundred forty-five million, one hundred twenty-two thousand, four hundred three".