423997073 has 2 divisors, whose sum is σ = 423997074. Its totient is φ = 423997072.

The previous prime is 423997039. The next prime is 423997127. The reversal of 423997073 is 370799324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243578449 + 180418624 = 15607^2 + 13432^2 .

It is a cyclic number.

It is not a de Polignac number, because 423997073 - 2⁶ = 423997009 is a prime.

It is not a weakly prime, because it can be changed into another prime (423997003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211998536 + 211998537.

It is an arithmetic number, because the mean of its divisors is an integer number (211998537).

Almost surely, 2^423997073 is an apocalyptic number.

It is an amenable number.

423997073 is a deficient number, since it is larger than the sum of its proper divisors (1).

423997073 is an equidigital number, since it uses as much as digits as its factorization.

423997073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 44.

The square root of 423997073 is about 20591.1892080084. The cubic root of 423997073 is about 751.2554221219.

The spelling of 423997073 in words is "four hundred twenty-three million, nine hundred ninety-seven thousand, seventy-three".