123896965397 has 4 divisors (see below), whose sum is σ = 123918703596. Its totient is φ = 123875227200.

The previous prime is 123896965333. The next prime is 123896965417. The reversal of 123896965397 is 793569698321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94326379876 + 29570585521 = 307126^2 + 171961^2 .

It is a cyclic number.

It is not a de Polignac number, because 123896965397 - 2⁶ = 123896965333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123896985397) 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 in 3 ways as a sum of consecutive naturals, for example, 10860548 + ... + 10871949.

It is an arithmetic number, because the mean of its divisors is an integer number (30979675899).

Almost surely, 2^123896965397 is an apocalyptic number.

It is an amenable number.

123896965397 is a deficient number, since it is larger than the sum of its proper divisors (21738199).

123896965397 is an equidigital number, since it uses as much as digits as its factorization.

123896965397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21738198.

The product of its digits is 132269760, while the sum is 68.

The spelling of 123896965397 in words is "one hundred twenty-three billion, eight hundred ninety-six million, nine hundred sixty-five thousand, three hundred ninety-seven".