508749 has 4 divisors (see below), whose sum is σ = 678336. Its totient is φ = 339164.

The previous prime is 508727. The next prime is 508771. The reversal of 508749 is 947805.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (508727) and next prime (508771).

It is a cyclic number.

It is not a de Polignac number, because 508749 - 2⁷ = 508621 is a prime.

It is a D-number.

It is a plaindrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (508709) 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 3 ways as a sum of consecutive naturals, for example, 84789 + ... + 84794.

It is an arithmetic number, because the mean of its divisors is an integer number (169584).

2⁵⁰⁸⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

508749 is a deficient number, since it is larger than the sum of its proper divisors (169587).

508749 is a wasteful number, since it uses less digits than its factorization.

508749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169586.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 508749 is about 713.2664298844. The cubic root of 508749 is about 79.8303174356.

The spelling of 508749 in words is "five hundred eight thousand, seven hundred forty-nine".