9969931 has 2 divisors, whose sum is σ = 9969932. Its totient is φ = 9969930.

The previous prime is 9969923. The next prime is 9969943. The reversal of 9969931 is 1399699.

9969931 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9969931 - 2³ = 9969923 is a prime.

It is a super-2 number, since 2×9969931² = 198799048289522, which contains 22 as substring.

It is a Chen prime.

9969931 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9969331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4984965 + 4984966.

It is an arithmetic number, because the mean of its divisors is an integer number (4984966).

Almost surely, 2^9969931 is an apocalyptic number.

9969931 is a deficient number, since it is larger than the sum of its proper divisors (1).

9969931 is an equidigital number, since it uses as much as digits as its factorization.

9969931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 118098, while the sum is 46.

The square root of 9969931 is about 3157.5197544909. The cubic root of 9969931 is about 215.2273132163.

The spelling of 9969931 in words is "nine million, nine hundred sixty-nine thousand, nine hundred thirty-one".