504404623 has 4 divisors (see below), whose sum is σ = 504551560. Its totient is φ = 504257688.

The previous prime is 504404617. The next prime is 504404633. The reversal of 504404623 is 326404405.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-504404623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 504404591 and 504404600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504404633) 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, 68193 + ... + 75226.

It is an arithmetic number, because the mean of its divisors is an integer number (126137890).

Almost surely, 2^504404623 is an apocalyptic number.

504404623 is a deficient number, since it is larger than the sum of its proper divisors (146937).

504404623 is a wasteful number, since it uses less digits than its factorization.

504404623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146936.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 504404623 is about 22458.9541831315. The cubic root of 504404623 is about 796.0243499660.

The spelling of 504404623 in words is "five hundred four million, four hundred four thousand, six hundred twenty-three".