512393998 has 4 divisors (see below), whose sum is σ = 768591000. Its totient is φ = 256196998.

The previous prime is 512393993. The next prime is 512394017. The reversal of 512393998 is 899393215.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512393993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128098498 + ... + 128098501.

It is an arithmetic number, because the mean of its divisors is an integer number (192147750).

Almost surely, 2^512393998 is an apocalyptic number.

512393998 is a deficient number, since it is larger than the sum of its proper divisors (256197002).

512393998 is a wasteful number, since it uses less digits than its factorization.

512393998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256197001.

The product of its digits is 524880, while the sum is 49.

The square root of 512393998 is about 22636.1215317466. The cubic root of 512393998 is about 800.2051546766.

The spelling of 512393998 in words is "five hundred twelve million, three hundred ninety-three thousand, nine hundred ninety-eight".