9279820989 has 12 divisors (see below), whose sum is σ = 14109669600. Its totient is φ = 5860939464.

The previous prime is 9279820973. The next prime is 9279820999. The reversal of 9279820989 is 9890289729.

It is not a de Polignac number, because 9279820989 - 2⁴ = 9279820973 is a prime.

It is a super-2 number, since 2×9279820989² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9279820999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27133809 + ... + 27134150.

It is an arithmetic number, because the mean of its divisors is an integer number (1175805800).

Almost surely, 2^9279820989 is an apocalyptic number.

It is an amenable number.

9279820989 is a deficient number, since it is larger than the sum of its proper divisors (4829848611).

9279820989 is a wasteful number, since it uses less digits than its factorization.

9279820989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54267984 (or 54267981 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The square root of 9279820989 is about 96331.8274974580. The cubic root of 9279820989 is about 2101.4216366974.

The spelling of 9279820989 in words is "nine billion, two hundred seventy-nine million, eight hundred twenty thousand, nine hundred eighty-nine".