423446161 has 4 divisors (see below), whose sum is σ = 423846324. Its totient is φ = 423046000.

The previous prime is 423446131. The next prime is 423446173. The reversal of 423446161 is 161644324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 344325136 + 79121025 = 18556^2 + 8895^2 .

It is a cyclic number.

It is not a de Polignac number, because 423446161 - 2¹¹ = 423444113 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423446131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198490 + ... + 200611.

It is an arithmetic number, because the mean of its divisors is an integer number (105961581).

Almost surely, 2^423446161 is an apocalyptic number.

It is an amenable number.

423446161 is a deficient number, since it is larger than the sum of its proper divisors (400163).

423446161 is a wasteful number, since it uses less digits than its factorization.

423446161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400162.

The product of its digits is 13824, while the sum is 31.

The square root of 423446161 is about 20577.8074876795. The cubic root of 423446161 is about 750.9299049296.

The spelling of 423446161 in words is "four hundred twenty-three million, four hundred forty-six thousand, one hundred sixty-one".