9640000999 has 2 divisors, whose sum is σ = 9640001000. Its totient is φ = 9640000998.

The previous prime is 9640000961. The next prime is 9640001003. The reversal of 9640000999 is 9990000469.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9990000469) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9640000999 - 2²³ = 9631612391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9640000199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4820000499 + 4820000500.

It is an arithmetic number, because the mean of its divisors is an integer number (4820000500).

Almost surely, 2^9640000999 is an apocalyptic number.

9640000999 is a deficient number, since it is larger than the sum of its proper divisors (1).

9640000999 is an equidigital number, since it uses as much as digits as its factorization.

9640000999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 9640000999 is about 98183.5067564813. The cubic root of 9640000999 is about 2128.2649509428.

The spelling of 9640000999 in words is "nine billion, six hundred forty million, nine hundred ninety-nine", and thus it is an aban number.