809085192949 has 8 divisors (see below), whose sum is σ = 906493484448. Its totient is φ = 715652750160.

The previous prime is 809085192901. The next prime is 809085192989. The reversal of 809085192949 is 949291580908.

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

It is a cyclic number.

It is not a de Polignac number, because 809085192949 - 2⁹ = 809085192437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809085192989) 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, 993961747 + ... + 993962560.

It is an arithmetic number, because the mean of its divisors is an integer number (113311685556).

Almost surely, 2^809085192949 is an apocalyptic number.

It is an amenable number.

809085192949 is a deficient number, since it is larger than the sum of its proper divisors (97408291499).

809085192949 is a wasteful number, since it uses less digits than its factorization.

809085192949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987924355.

The product of its (nonzero) digits is 16796160, while the sum is 64.

The spelling of 809085192949 in words is "eight hundred nine billion, eighty-five million, one hundred ninety-two thousand, nine hundred forty-nine".