9090856509 has 8 divisors (see below), whose sum is σ = 13852733760. Its totient is φ = 5194775136.

The previous prime is 9090856501. The next prime is 9090856517. The reversal of 9090856509 is 9056580909.

It is an interprime number because it is at equal distance from previous prime (9090856501) and next prime (9090856517).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9090856509 - 2³ = 9090856501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090856501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216448944 + ... + 216448985.

It is an arithmetic number, because the mean of its divisors is an integer number (1731591720).

Almost surely, 2^9090856509 is an apocalyptic number.

It is an amenable number.

9090856509 is a deficient number, since it is larger than the sum of its proper divisors (4761877251).

9090856509 is a wasteful number, since it uses less digits than its factorization.

9090856509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432897939.

The product of its (nonzero) digits is 874800, while the sum is 51.

The square root of 9090856509 is about 95345.9831823030. The cubic root of 9090856509 is about 2087.0599985491.

The spelling of 9090856509 in words is "nine billion, ninety million, eight hundred fifty-six thousand, five hundred nine".