9961907 has 2 divisors, whose sum is σ = 9961908. Its totient is φ = 9961906.

The previous prime is 9961879. The next prime is 9961927. The reversal of 9961907 is 7091699.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9961907 - 2¹⁸ = 9699763 is a prime.

It is not a weakly prime, because it can be changed into another prime (9961927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4980953 + 4980954.

It is an arithmetic number, because the mean of its divisors is an integer number (4980954).

Almost surely, 2^9961907 is an apocalyptic number.

9961907 is a deficient number, since it is larger than the sum of its proper divisors (1).

9961907 is an equidigital number, since it uses as much as digits as its factorization.

9961907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 9961907 is about 3156.2488811879. The cubic root of 9961907 is about 215.1695579696.

The spelling of 9961907 in words is "nine million, nine hundred sixty-one thousand, nine hundred seven".