504990641 has 4 divisors (see below), whose sum is σ = 505137984. Its totient is φ = 504843300.

The previous prime is 504990611. The next prime is 504990643. The reversal of 504990641 is 146099405.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-504990641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 504990595 and 504990604.

It is not an unprimeable number, because it can be changed into a prime (504990643) 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, 68405 + ... + 75426.

It is an arithmetic number, because the mean of its divisors is an integer number (126284496).

Almost surely, 2^504990641 is an apocalyptic number.

It is an amenable number.

504990641 is a deficient number, since it is larger than the sum of its proper divisors (147343).

504990641 is a wasteful number, since it uses less digits than its factorization.

504990641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147342.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 504990641 is about 22471.9968182625. The cubic root of 504990641 is about 796.3325047281.

The spelling of 504990641 in words is "five hundred four million, nine hundred ninety thousand, six hundred forty-one".