123596009 has 2 divisors, whose sum is σ = 123596010. Its totient is φ = 123596008.

The previous prime is 123596003. The next prime is 123596059. The reversal of 123596009 is 900695321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80496784 + 43099225 = 8972^2 + 6565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123596009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123596009.

It is not a weakly prime, because it can be changed into another prime (123596003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61798004 + 61798005.

It is an arithmetic number, because the mean of its divisors is an integer number (61798005).

Almost surely, 2^123596009 is an apocalyptic number.

It is an amenable number.

123596009 is a deficient number, since it is larger than the sum of its proper divisors (1).

123596009 is an equidigital number, since it uses as much as digits as its factorization.

123596009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 123596009 is about 11117.3741953755. The cubic root of 123596009 is about 498.1209592578.

The spelling of 123596009 in words is "one hundred twenty-three million, five hundred ninety-six thousand, nine".