9937398831 has 8 divisors (see below), whose sum is σ = 13331153280. Its totient is φ = 6584288472.

The previous prime is 9937398817. The next prime is 9937398833. The reversal of 9937398831 is 1388937399.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9937398831 - 2¹⁰ = 9937397807 is a prime.

It is a super-2 number, since 2×9937398831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9937398833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10160451 + ... + 10161428.

It is an arithmetic number, because the mean of its divisors is an integer number (1666394160).

Almost surely, 2^9937398831 is an apocalyptic number.

9937398831 is a deficient number, since it is larger than the sum of its proper divisors (3393754449).

9937398831 is a wasteful number, since it uses less digits than its factorization.

9937398831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20322045.

The product of its digits is 8817984, while the sum is 60.

The square root of 9937398831 is about 99686.5027523787. The cubic root of 9937398831 is about 2149.9296051226.

The spelling of 9937398831 in words is "nine billion, nine hundred thirty-seven million, three hundred ninety-eight thousand, eight hundred thirty-one".