500140387 has 4 divisors (see below), whose sum is σ = 500493280. Its totient is φ = 499787496.

The previous prime is 500140369. The next prime is 500140423. The reversal of 500140387 is 783041005.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783041005 = 5 ⋅156608201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500140387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500140337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174312 + ... + 177157.

It is an arithmetic number, because the mean of its divisors is an integer number (125123320).

Almost surely, 2^500140387 is an apocalyptic number.

500140387 is a deficient number, since it is larger than the sum of its proper divisors (352893).

500140387 is a wasteful number, since it uses less digits than its factorization.

500140387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352892.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 500140387 is about 22363.8187034326. The cubic root of 500140387 is about 793.7748025234.

The spelling of 500140387 in words is "five hundred million, one hundred forty thousand, three hundred eighty-seven".