423372973 has 2 divisors, whose sum is σ = 423372974. Its totient is φ = 423372972.

The previous prime is 423372931. The next prime is 423373003. The reversal of 423372973 is 379273324.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406546569 + 16826404 = 20163^2 + 4102^2 .

It is a cyclic number.

It is not a de Polignac number, because 423372973 - 2⁹ = 423372461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423372373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211686486 + 211686487.

It is an arithmetic number, because the mean of its divisors is an integer number (211686487).

Almost surely, 2^423372973 is an apocalyptic number.

It is an amenable number.

423372973 is a deficient number, since it is larger than the sum of its proper divisors (1).

423372973 is an equidigital number, since it uses as much as digits as its factorization.

423372973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 40.

The square root of 423372973 is about 20576.0290872656. The cubic root of 423372973 is about 750.8866391188.

The spelling of 423372973 in words is "four hundred twenty-three million, three hundred seventy-two thousand, nine hundred seventy-three".