9945967 has 2 divisors, whose sum is σ = 9945968. Its totient is φ = 9945966.

The previous prime is 9945961. The next prime is 9945977. The reversal of 9945967 is 7695499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9945967 - 2¹⁹ = 9421679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9945967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9945961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4972983 + 4972984.

It is an arithmetic number, because the mean of its divisors is an integer number (4972984).

Almost surely, 2^9945967 is an apocalyptic number.

9945967 is a deficient number, since it is larger than the sum of its proper divisors (1).

9945967 is an equidigital number, since it uses as much as digits as its factorization.

9945967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 49.

The square root of 9945967 is about 3153.7227208491. The cubic root of 9945967 is about 215.0547327754.

The spelling of 9945967 in words is "nine million, nine hundred forty-five thousand, nine hundred sixty-seven".