423997097 has 6 divisors (see below), whose sum is σ = 435767598. Its totient is φ = 412536384.

The previous prime is 423997073. The next prime is 423997127. The reversal of 423997097 is 790799324.

It can be written as a sum of positive squares in 3 ways, for example, as 324576256 + 99420841 = 18016^2 + 9971^2 .

It is not a de Polignac number, because 423997097 - 2⁸ = 423996841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423997897) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153488 + ... + 156225.

It is an arithmetic number, because the mean of its divisors is an integer number (72627933).

Almost surely, 2^423997097 is an apocalyptic number.

It is an amenable number.

423997097 is a deficient number, since it is larger than the sum of its proper divisors (11770501).

423997097 is an equidigital number, since it uses as much as digits as its factorization.

423997097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309787 (or 309750 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 50.

The square root of 423997097 is about 20591.1897907819. The cubic root of 423997097 is about 751.2554362967.

The spelling of 423997097 in words is "four hundred twenty-three million, nine hundred ninety-seven thousand, ninety-seven".