9964939 has 2 divisors, whose sum is σ = 9964940. Its totient is φ = 9964938.

The previous prime is 9964937. The next prime is 9964961. The reversal of 9964939 is 9394699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9964939 - 2¹ = 9964937 is a prime.

Together with 9964937, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 9964892 and 9964901.

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, 4982469 + 4982470.

It is an arithmetic number, because the mean of its divisors is an integer number (4982470).

Almost surely, 2^9964939 is an apocalyptic number.

9964939 is a deficient number, since it is larger than the sum of its proper divisors (1).

9964939 is an equidigital number, since it uses as much as digits as its factorization.

9964939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 472392, while the sum is 49.

The square root of 9964939 is about 3156.7291616482. The cubic root of 9964939 is about 215.1913853809.

The spelling of 9964939 in words is "nine million, nine hundred sixty-four thousand, nine hundred thirty-nine".