8919136309 has 4 divisors (see below), whose sum is σ = 9443791404. Its totient is φ = 8394481216.

The previous prime is 8919136307. The next prime is 8919136327. The reversal of 8919136309 is 9036319198.

8919136309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8254631025 + 664505284 = 90855^2 + 25778^2 .

It is a cyclic number.

It is not a de Polignac number, because 8919136309 - 2¹ = 8919136307 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8919136301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262327522 + ... + 262327555.

It is an arithmetic number, because the mean of its divisors is an integer number (2360947851).

Almost surely, 2^8919136309 is an apocalyptic number.

It is an amenable number.

8919136309 is a deficient number, since it is larger than the sum of its proper divisors (524655095).

8919136309 is a wasteful number, since it uses less digits than its factorization.

8919136309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524655094.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 8919136309 is about 94441.1790957737. The cubic root of 8919136309 is about 2073.8353213540.

The spelling of 8919136309 in words is "eight billion, nine hundred nineteen million, one hundred thirty-six thousand, three hundred nine".