423844573 has 2 divisors, whose sum is σ = 423844574. Its totient is φ = 423844572.

The previous prime is 423844567. The next prime is 423844607. The reversal of 423844573 is 375448324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411156729 + 12687844 = 20277^2 + 3562^2 .

It is a cyclic number.

It is not a de Polignac number, because 423844573 - 2²¹ = 421747421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423844523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211922286 + 211922287.

It is an arithmetic number, because the mean of its divisors is an integer number (211922287).

Almost surely, 2^423844573 is an apocalyptic number.

It is an amenable number.

423844573 is a deficient number, since it is larger than the sum of its proper divisors (1).

423844573 is an equidigital number, since it uses as much as digits as its factorization.

423844573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 40.

The square root of 423844573 is about 20587.4858348464. The cubic root of 423844573 is about 751.1653427343.

The spelling of 423844573 in words is "four hundred twenty-three million, eight hundred forty-four thousand, five hundred seventy-three".