9931425869 has 8 divisors (see below), whose sum is σ = 10284498720. Its totient is φ = 9579060400.

The previous prime is 9931425863. The next prime is 9931425883. The reversal of 9931425869 is 9685241399.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9931425869 is a prime.

It is a super-2 number, since 2×9931425869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9931425863) 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, 148187 + ... + 204504.

It is an arithmetic number, because the mean of its divisors is an integer number (1285562340).

Almost surely, 2^9931425869 is an apocalyptic number.

It is an amenable number.

9931425869 is a deficient number, since it is larger than the sum of its proper divisors (353072851).

9931425869 is a wasteful number, since it uses less digits than its factorization.

9931425869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353691.

The product of its digits is 4199040, while the sum is 56.

The square root of 9931425869 is about 99656.5395194916. The cubic root of 9931425869 is about 2149.4987740190.

The spelling of 9931425869 in words is "nine billion, nine hundred thirty-one million, four hundred twenty-five thousand, eight hundred sixty-nine".