8540973309 has 32 divisors (see below), whose sum is σ = 13528051200. Its totient is φ = 4734797760.

The previous prime is 8540973283. The next prime is 8540973323. The reversal of 8540973309 is 9033790458.

It is not a de Polignac number, because 8540973309 - 2²³ = 8532584701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8540973379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216679 + ... + 253044.

It is an arithmetic number, because the mean of its divisors is an integer number (422751600).

Almost surely, 2^8540973309 is an apocalyptic number.

It is an amenable number.

8540973309 is a deficient number, since it is larger than the sum of its proper divisors (4987077891).

8540973309 is a wasteful number, since it uses less digits than its factorization.

8540973309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469785.

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 8540973309 is about 92417.3863999626. The cubic root of 8540973309 is about 2044.1014904519.

The spelling of 8540973309 in words is "eight billion, five hundred forty million, nine hundred seventy-three thousand, three hundred nine".