423345445 has 8 divisors (see below), whose sum is σ = 509750136. Its totient is φ = 337519296.

The previous prime is 423345367. The next prime is 423345457. The reversal of 423345445 is 544543324.

It can be written as a sum of positive squares in 4 ways, for example, as 42393121 + 380952324 = 6511^2 + 19518^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423345445 - 2¹³ = 423337253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423345445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143022 + ... + 145951.

It is an arithmetic number, because the mean of its divisors is an integer number (63718767).

Almost surely, 2^423345445 is an apocalyptic number.

It is an amenable number.

423345445 is a deficient number, since it is larger than the sum of its proper divisors (86404691).

423345445 is a wasteful number, since it uses less digits than its factorization.

423345445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289271.

The product of its digits is 115200, while the sum is 34.

The square root of 423345445 is about 20575.3601426561. The cubic root of 423345445 is about 750.8703643786.

Adding to 423345445 its reverse (544543324), we get a palindrome (967888769).

The spelling of 423345445 in words is "four hundred twenty-three million, three hundred forty-five thousand, four hundred forty-five".