501389 has 8 divisors (see below), whose sum is σ = 587328. Its totient is φ = 419040.

The previous prime is 501383. The next prime is 501401. The reversal of 501389 is 983105.

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

It is a cyclic number.

It is not a de Polignac number, because 501389 - 2⁸ = 501133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587 + ... + 1160.

It is an arithmetic number, because the mean of its divisors is an integer number (73416).

2⁵⁰¹³⁸⁹ is an apocalyptic number.

It is an amenable number.

501389 is a deficient number, since it is larger than the sum of its proper divisors (85939).

501389 is a wasteful number, since it uses less digits than its factorization.

501389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 501389 is about 708.0882713335. The cubic root of 501389 is about 79.4434813140.

The spelling of 501389 in words is "five hundred one thousand, three hundred eighty-nine".