9379889639 has 4 divisors (see below), whose sum is σ = 9380322024. Its totient is φ = 9379457256.

The previous prime is 9379889633. The next prime is 9379889671. The reversal of 9379889639 is 9369889739.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9379889639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9379889633) 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, 181832 + ... + 227645.

It is an arithmetic number, because the mean of its divisors is an integer number (2345080506).

Almost surely, 2^9379889639 is an apocalyptic number.

9379889639 is a deficient number, since it is larger than the sum of its proper divisors (432385).

9379889639 is a wasteful number, since it uses less digits than its factorization.

9379889639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432384.

The product of its digits is 158723712, while the sum is 71.

The square root of 9379889639 is about 96849.8303509098. The cubic root of 9379889639 is about 2108.9481845410.

The spelling of 9379889639 in words is "nine billion, three hundred seventy-nine million, eight hundred eighty-nine thousand, six hundred thirty-nine".