534705509 has 16 divisors (see below), whose sum is σ = 603884400. Its totient is φ = 470002176.

The previous prime is 534705497. The next prime is 534705517. The reversal of 534705509 is 905507435.

534705509 = 437² + 438² + ... + 1190².

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 125776225 + 408929284 = 11215^2 + 20222^2 .

It is a cyclic number.

It is not a de Polignac number, because 534705509 - 2¹² = 534701413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534705209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17807 + ... + 37235.

It is an arithmetic number, because the mean of its divisors is an integer number (37742775).

Almost surely, 2^534705509 is an apocalyptic number.

It is an amenable number.

534705509 is a deficient number, since it is larger than the sum of its proper divisors (69178891).

534705509 is a wasteful number, since it uses less digits than its factorization.

534705509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19544.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 534705509 is about 23123.7001580629. The cubic root of 534705509 is about 811.6551579355.

The spelling of 534705509 in words is "five hundred thirty-four million, seven hundred five thousand, five hundred nine".