9387797989 has 4 divisors (see below), whose sum is σ = 9881892640. Its totient is φ = 8893703340.

The previous prime is 9387797981. The next prime is 9387798019. The reversal of 9387797989 is 9897977839.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 9387797989 - 2³ = 9387797981 is a prime.

It is a super-3 number, since 3×9387797989³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9387797981) 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, 247047297 + ... + 247047334.

It is an arithmetic number, because the mean of its divisors is an integer number (2470473160).

Almost surely, 2^9387797989 is an apocalyptic number.

It is an amenable number.

9387797989 is a deficient number, since it is larger than the sum of its proper divisors (494094651).

9387797989 is a wasteful number, since it uses less digits than its factorization.

9387797989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494094650.

The product of its digits is 432081216, while the sum is 76.

The square root of 9387797989 is about 96890.6496469087. The cubic root of 9387797989 is about 2109.5407151554.

The spelling of 9387797989 in words is "nine billion, three hundred eighty-seven million, seven hundred ninety-seven thousand, nine hundred eighty-nine".