513439109 has 12 divisors (see below), whose sum is σ = 545531040. Its totient is φ = 483143400.

The previous prime is 513439093. The next prime is 513439111. The reversal of 513439109 is 901934315.

It is not a de Polignac number, because 513439109 - 2⁴ = 513439093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513439169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49802 + ... + 59220.

It is an arithmetic number, because the mean of its divisors is an integer number (45460920).

Almost surely, 2^513439109 is an apocalyptic number.

It is an amenable number.

513439109 is a deficient number, since it is larger than the sum of its proper divisors (32091931).

513439109 is a wasteful number, since it uses less digits than its factorization.

513439109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9608 (or 9589 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 513439109 is about 22659.1948003454. The cubic root of 513439109 is about 800.7488347769.

The spelling of 513439109 in words is "five hundred thirteen million, four hundred thirty-nine thousand, one hundred nine".