9649987 has 2 divisors, whose sum is σ = 9649988. Its totient is φ = 9649986.

The previous prime is 9649979. The next prime is 9650023. The reversal of 9649987 is 7899469.

9649987 is digitally balanced in base 3, 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 9649987 - 2³ = 9649979 is a prime.

It is not a weakly prime, because it can be changed into another prime (9649187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4824993 + 4824994.

It is an arithmetic number, because the mean of its divisors is an integer number (4824994).

Almost surely, 2^9649987 is an apocalyptic number.

9649987 is a deficient number, since it is larger than the sum of its proper divisors (1).

9649987 is an equidigital number, since it uses as much as digits as its factorization.

9649987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 52.

The square root of 9649987 is about 3106.4428209771. The cubic root of 9649987 is about 212.8999581627.

The spelling of 9649987 in words is "nine million, six hundred forty-nine thousand, nine hundred eighty-seven".