9961487 has 2 divisors, whose sum is σ = 9961488.
Its totient is φ = 9961486.
The previous prime is 9961463. The next prime is 9961517. The reversal of 9961487 is 7841699.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 9961487 - 210 = 9960463 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 (9961387) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4980743 + 4980744.
It is an arithmetic number, because the mean of its divisors is an integer number (4980744).
Almost surely, 29961487 is an apocalyptic number.
9961487 is a deficient number, since it is larger than the sum of its proper divisors (1).
9961487 is an equidigital number, since it uses as much as digits as its factorization.
9961487 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 108864, while the sum is 44.
The square root of 9961487 is about 3156.1823458096.
The cubic root of 9961487 is about 215.1665340344.
The spelling of 9961487 in words is "nine million, nine hundred sixty-one thousand, four hundred eighty-seven".