9821076308949 has 4 divisors (see below), whose sum is σ = 13094768411936. Its totient is φ = 6547384205964.

The previous prime is 9821076308933. The next prime is 9821076308971. The reversal of 9821076308949 is 9498036701289.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9821076308949 - 2⁴ = 9821076308933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9821076308949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9821076308999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1636846051489 + ... + 1636846051494.

It is an arithmetic number, because the mean of its divisors is an integer number (3273692102984).

Almost surely, 2^{9821076308949} is an apocalyptic number.

It is an amenable number.

9821076308949 is a deficient number, since it is larger than the sum of its proper divisors (3273692102987).

9821076308949 is a wasteful number, since it uses less digits than its factorization.

9821076308949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273692102986.

The product of its (nonzero) digits is 47029248, while the sum is 66.

The spelling of 9821076308949 in words is "nine trillion, eight hundred twenty-one billion, seventy-six million, three hundred eight thousand, nine hundred forty-nine".