504399998 has 4 divisors (see below), whose sum is σ = 756600000. Its totient is φ = 252199998.

The previous prime is 504399991. The next prime is 504400037. The reversal of 504399998 is 899993405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 899993405 = 5 ⋅179998681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504399991) 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, 126099998 + ... + 126100001.

It is an arithmetic number, because the mean of its divisors is an integer number (189150000).

Almost surely, 2^504399998 is an apocalyptic number.

504399998 is a deficient number, since it is larger than the sum of its proper divisors (252200002).

504399998 is a wasteful number, since it uses less digits than its factorization.

504399998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252200001.

The product of its (nonzero) digits is 3149280, while the sum is 56.

The square root of 504399998 is about 22458.8512172818. The cubic root of 504399998 is about 796.0219169828.

The spelling of 504399998 in words is "five hundred four million, three hundred ninety-nine thousand, nine hundred ninety-eight".