9378489899 has 4 divisors (see below), whose sum is σ = 9483866280. Its totient is φ = 9273113520.

The previous prime is 9378489881. The next prime is 9378489941. The reversal of 9378489899 is 9989848739.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9378489899 - 2⁸ = 9378489643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9378489859) 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, 52688057 + ... + 52688234.

It is an arithmetic number, because the mean of its divisors is an integer number (2370966570).

Almost surely, 2^9378489899 is an apocalyptic number.

9378489899 is a deficient number, since it is larger than the sum of its proper divisors (105376381).

9378489899 is a wasteful number, since it uses less digits than its factorization.

9378489899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105376380.

The product of its digits is 282175488, while the sum is 74.

The square root of 9378489899 is about 96842.6037392634. The cubic root of 9378489899 is about 2108.8432747785.

The spelling of 9378489899 in words is "nine billion, three hundred seventy-eight million, four hundred eighty-nine thousand, eight hundred ninety-nine".