8742811009 has 3 divisors (see below), whose sum is σ = 8742904513. Its totient is φ = 8742717506.

The previous prime is 8742810997. The next prime is 8742811073. The reversal of 8742811009 is 9001182478.

It is a happy number.

The square root of 8742811009 is 93503.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 8742811009 - 2³³ = 152876417 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8742811109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 46752 + ... + 140254.

Almost surely, 2^8742811009 is an apocalyptic number.

8742811009 is the 93503-rd square number.

8742811009 is the 46752-nd centered octagonal number.

It is an amenable number.

8742811009 is a deficient number, since it is larger than the sum of its proper divisors (93504).

8742811009 is an frugal number, since it uses more digits than its factorization.

8742811009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187006 (or 93503 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The cubic root of 8742811009 is about 2060.0781546526.

The spelling of 8742811009 in words is "eight billion, seven hundred forty-two million, eight hundred eleven thousand, nine".