445228923 has 8 divisors (see below), whose sum is σ = 607444288. Its totient is φ = 289916424.

The previous prime is 445228891. The next prime is 445228937. The reversal of 445228923 is 329822544.

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

It is not a de Polignac number, because 445228923 - 2⁵ = 445228891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445228123) by changing a digit.

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, 1725565 + ... + 1725822.

It is an arithmetic number, because the mean of its divisors is an integer number (75930536).

Almost surely, 2^445228923 is an apocalyptic number.

445228923 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

445228923 is a deficient number, since it is larger than the sum of its proper divisors (162215365).

445228923 is a wasteful number, since it uses less digits than its factorization.

445228923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451433.

The product of its digits is 138240, while the sum is 39.

The square root of 445228923 is about 21100.4484075576. The cubic root of 445228923 is about 763.5915663411.

The spelling of 445228923 in words is "four hundred forty-five million, two hundred twenty-eight thousand, nine hundred twenty-three".