9716439138 has 32 divisors (see below), whose sum is σ = 22513243776. Its totient is φ = 2738095488.

The previous prime is 9716439113. The next prime is 9716439169. The reversal of 9716439138 is 8319346179.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1581481 + ... + 1587612.

It is an arithmetic number, because the mean of its divisors is an integer number (703538868).

Almost surely, 2^9716439138 is an apocalyptic number.

9716439138 is an abundant number, since it is smaller than the sum of its proper divisors (12796804638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9716439138 is a wasteful number, since it uses less digits than its factorization.

9716439138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169178.

The product of its digits is 979776, while the sum is 51.

The square root of 9716439138 is about 98571.9997666680. Note that the first 3 decimals coincide. The cubic root of 9716439138 is about 2133.8753416822.

The spelling of 9716439138 in words is "nine billion, seven hundred sixteen million, four hundred thirty-nine thousand, one hundred thirty-eight".