9965951 has 2 divisors, whose sum is σ = 9965952. Its totient is φ = 9965950.

The previous prime is 9965947. The next prime is 9965957. The reversal of 9965951 is 1595699.

9965951 is digitally balanced in base 2, 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 9965951 - 2² = 9965947 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9965957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982975 + 4982976.

It is an arithmetic number, because the mean of its divisors is an integer number (4982976).

Almost surely, 2^9965951 is an apocalyptic number.

9965951 is a deficient number, since it is larger than the sum of its proper divisors (1).

9965951 is an equidigital number, since it uses as much as digits as its factorization.

9965951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 109350, while the sum is 44.

The square root of 9965951 is about 3156.8894500758. The cubic root of 9965951 is about 215.1986697978.

The spelling of 9965951 in words is "nine million, nine hundred sixty-five thousand, nine hundred fifty-one".