505396938 has 8 divisors (see below), whose sum is σ = 1010793888. Its totient is φ = 168465644.

The previous prime is 505396919. The next prime is 505396939. The reversal of 505396938 is 839693505.

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

505396938 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505396939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42116406 + ... + 42116417.

It is an arithmetic number, because the mean of its divisors is an integer number (126349236).

Almost surely, 2^505396938 is an apocalyptic number.

505396938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505396938 is a wasteful number, since it uses less digits than its factorization.

505396938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84232828.

The product of its (nonzero) digits is 874800, while the sum is 48.

The square root of 505396938 is about 22481.0350740352. The cubic root of 505396938 is about 796.5460141470.

The spelling of 505396938 in words is "five hundred five million, three hundred ninety-six thousand, nine hundred thirty-eight".