518949 has 18 divisors (see below), whose sum is σ = 790790. Its totient is φ = 327888.

The previous prime is 518933. The next prime is 518953. The reversal of 518949 is 949815.

It can be written as a sum of positive squares in only one way, i.e., 476100 + 42849 = 690^2 + 207^2 .

It is not a de Polignac number, because 518949 - 2⁴ = 518933 is a prime.

It is a Duffinian number.

Its product of digits (12960) is a multiple of the sum of its prime divisors (135).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518989) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4707 + ... + 4815.

2⁵¹⁸⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

518949 is a deficient number, since it is larger than the sum of its proper divisors (271841).

518949 is a wasteful number, since it uses less digits than its factorization.

518949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 135 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 518949 is about 720.3811491148. The cubic root of 518949 is about 80.3603019287.

The spelling of 518949 in words is "five hundred eighteen thousand, nine hundred forty-nine".