423198289 has 4 divisors (see below), whose sum is σ = 448092324. Its totient is φ = 398304256.

The previous prime is 423198287. The next prime is 423198313. The reversal of 423198289 is 982891324.

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 183196225 + 240002064 = 13535^2 + 15492^2 .

It is a cyclic number.

It is not a de Polignac number, because 423198289 - 2¹ = 423198287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423198287) 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, 12446992 + ... + 12447025.

It is an arithmetic number, because the mean of its divisors is an integer number (112023081).

Almost surely, 2^423198289 is an apocalyptic number.

It is an amenable number.

423198289 is a deficient number, since it is larger than the sum of its proper divisors (24894035).

423198289 is a wasteful number, since it uses less digits than its factorization.

423198289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24894034.

The product of its digits is 248832, while the sum is 46.

The square root of 423198289 is about 20571.7838069527. The cubic root of 423198289 is about 750.7833527856.

The spelling of 423198289 in words is "four hundred twenty-three million, one hundred ninety-eight thousand, two hundred eighty-nine".