423393172 has 6 divisors (see below), whose sum is σ = 740938058. Its totient is φ = 211696584.

The previous prime is 423393163. The next prime is 423393193. The reversal of 423393172 is 271393324.

It can be written as a sum of positive squares in only one way, i.e., 347598736 + 75794436 = 18644^2 + 8706^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52924143 + ... + 52924150.

Almost surely, 2^423393172 is an apocalyptic number.

It is an amenable number.

423393172 is a deficient number, since it is larger than the sum of its proper divisors (317544886).

423393172 is a wasteful number, since it uses less digits than its factorization.

423393172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105848297 (or 105848295 counting only the distinct ones).

The product of its digits is 27216, while the sum is 34.

The square root of 423393172 is about 20576.5199195588. The cubic root of 423393172 is about 750.8985804557.

The spelling of 423393172 in words is "four hundred twenty-three million, three hundred ninety-three thousand, one hundred seventy-two".