8742005389 has 4 divisors (see below), whose sum is σ = 9414467356. Its totient is φ = 8069543424.

The previous prime is 8742005383. The next prime is 8742005413. The reversal of 8742005389 is 9835002478.

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 929213289 + 7812792100 = 30483^2 + 88390^2 .

It is a cyclic number.

It is not a de Polignac number, because 8742005389 - 2³ = 8742005381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8742005381) 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, 336230964 + ... + 336230989.

It is an arithmetic number, because the mean of its divisors is an integer number (2353616839).

Almost surely, 2^8742005389 is an apocalyptic number.

It is an amenable number.

8742005389 is a deficient number, since it is larger than the sum of its proper divisors (672461967).

8742005389 is a wasteful number, since it uses less digits than its factorization.

8742005389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672461966.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 8742005389 is about 93498.6919106358. The cubic root of 8742005389 is about 2060.0148763340.

The spelling of 8742005389 in words is "eight billion, seven hundred forty-two million, five thousand, three hundred eighty-nine".