9963931 has 2 divisors, whose sum is σ = 9963932. Its totient is φ = 9963930.

The previous prime is 9963929. The next prime is 9963959. The reversal of 9963931 is 1393699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9963931 - 2¹ = 9963929 is a prime.

It is a super-2 number, since 2×9963931² = 198559841945522, which contains 22 as substring.

Together with 9963929, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9964931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4981965 + 4981966.

It is an arithmetic number, because the mean of its divisors is an integer number (4981966).

Almost surely, 2^9963931 is an apocalyptic number.

9963931 is a deficient number, since it is larger than the sum of its proper divisors (1).

9963931 is an equidigital number, since it uses as much as digits as its factorization.

9963931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39366, while the sum is 40.

The square root of 9963931 is about 3156.5694986805. The cubic root of 9963931 is about 215.1841292659.

The spelling of 9963931 in words is "nine million, nine hundred sixty-three thousand, nine hundred thirty-one".