249608000009 has 2 divisors, whose sum is σ = 249608000010. Its totient is φ = 249608000008.

The previous prime is 249607999999. The next prime is 249608000051. The reversal of 249608000009 is 900000806942.

249608000009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190840543609 + 58767456400 = 436853^2 + 242420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249608000009 is a prime.

It is not a weakly prime, because it can be changed into another prime (249608003009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124804000004 + 124804000005.

It is an arithmetic number, because the mean of its divisors is an integer number (124804000005).

Almost surely, 2^249608000009 is an apocalyptic number.

It is an amenable number.

249608000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

249608000009 is an equidigital number, since it uses as much as digits as its factorization.

249608000009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 249608000009 in words is "two hundred forty-nine billion, six hundred eight million, nine", and thus it is an aban number.