505984129 has 8 divisors (see below), whose sum is σ = 582821888. Its totient is φ = 430284960.

The previous prime is 505984109. The next prime is 505984151. The reversal of 505984129 is 921489505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505984129 - 2⁹ = 505983617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505984109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283692 + ... + 285469.

It is an arithmetic number, because the mean of its divisors is an integer number (72852736).

Almost surely, 2^505984129 is an apocalyptic number.

It is an amenable number.

505984129 is a deficient number, since it is larger than the sum of its proper divisors (76837759).

505984129 is a wasteful number, since it uses less digits than its factorization.

505984129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569295.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 505984129 is about 22494.0909796329. The cubic root of 505984129 is about 796.8543814201.

The spelling of 505984129 in words is "five hundred five million, nine hundred eighty-four thousand, one hundred twenty-nine".