534809388409 has 4 divisors (see below), whose sum is σ = 536518044916. Its totient is φ = 533100731904.

The previous prime is 534809388401. The next prime is 534809388419. The reversal of 534809388409 is 904883908435.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 242807490025 + 292001898384 = 492755^2 + 540372^2 .

It is a cyclic number.

It is not a de Polignac number, because 534809388409 - 2³ = 534809388401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (534809388401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854327784 + ... + 854328409.

It is an arithmetic number, because the mean of its divisors is an integer number (134129511229).

Almost surely, 2^534809388409 is an apocalyptic number.

It is an amenable number.

534809388409 is a deficient number, since it is larger than the sum of its proper divisors (1708656507).

534809388409 is a wasteful number, since it uses less digits than its factorization.

534809388409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708656506.

The product of its (nonzero) digits is 29859840, while the sum is 61.

The spelling of 534809388409 in words is "five hundred thirty-four billion, eight hundred nine million, three hundred eighty-eight thousand, four hundred nine".