423430177 has 4 divisors (see below), whose sum is σ = 423696916. Its totient is φ = 423163440.

The previous prime is 423430171. The next prime is 423430187. The reversal of 423430177 is 771034324.

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 251190801 + 172239376 = 15849^2 + 13124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423430177 is a prime.

It is a super-2 number, since 2×423430177² = 358586229588502658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423430171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130974 + ... + 134167.

It is an arithmetic number, because the mean of its divisors is an integer number (105924229).

Almost surely, 2^423430177 is an apocalyptic number.

It is an amenable number.

423430177 is a deficient number, since it is larger than the sum of its proper divisors (266739).

423430177 is a wasteful number, since it uses less digits than its factorization.

423430177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266738.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 423430177 is about 20577.4191044455. The cubic root of 423430177 is about 750.9204562553.

The spelling of 423430177 in words is "four hundred twenty-three million, four hundred thirty thousand, one hundred seventy-seven".