504219994 has 4 divisors (see below), whose sum is σ = 756329994. Its totient is φ = 252109996.

The previous prime is 504219971. The next prime is 504220037. The reversal of 504219994 is 499912405.

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

It can be written as a sum of positive squares in only one way, i.e., 503418969 + 801025 = 22437^2 + 895^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 504219994.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126054997 + ... + 126055000.

Almost surely, 2^504219994 is an apocalyptic number.

504219994 is a deficient number, since it is larger than the sum of its proper divisors (252110000).

504219994 is a wasteful number, since it uses less digits than its factorization.

504219994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252109999.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 504219994 is about 22454.8434418947. The cubic root of 504219994 is about 795.9272142482.

The spelling of 504219994 in words is "five hundred four million, two hundred nineteen thousand, nine hundred ninety-four".