502085391 has 8 divisors (see below), whose sum is σ = 670578480. Its totient is φ = 334157952.

The previous prime is 502085387. The next prime is 502085407. The reversal of 502085391 is 193580205.

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

It is not a de Polignac number, because 502085391 - 2² = 502085387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502085351) 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 7 ways as a sum of consecutive naturals, for example, 139336 + ... + 142893.

It is an arithmetic number, because the mean of its divisors is an integer number (83822310).

Almost surely, 2^502085391 is an apocalyptic number.

502085391 is a deficient number, since it is larger than the sum of its proper divisors (168493089).

502085391 is a wasteful number, since it uses less digits than its factorization.

502085391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282825.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 502085391 is about 22407.2620148023. The cubic root of 502085391 is about 794.8024460673.

The spelling of 502085391 in words is "five hundred two million, eighty-five thousand, three hundred ninety-one".