12400097 has 2 divisors, whose sum is σ = 12400098. Its totient is φ = 12400096.

The previous prime is 12400049. The next prime is 12400109. The reversal of 12400097 is 79000421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10784656 + 1615441 = 3284^2 + 1271^2 .

It is an emirp because it is prime and its reverse (79000421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12400097 - 2¹⁰ = 12399073 is a prime.

It is a Chen prime.

It is equal to p₈₁₂₆₀₆ and since 12400097 and 812606 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (12400397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200048 + 6200049.

It is an arithmetic number, because the mean of its divisors is an integer number (6200049).

Almost surely, 2^12400097 is an apocalyptic number.

It is an amenable number.

12400097 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400097 is an equidigital number, since it uses as much as digits as its factorization.

12400097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 12400097 is about 3521.3771453793. The cubic root of 12400097 is about 231.4595089863.

The spelling of 12400097 in words is "twelve million, four hundred thousand, ninety-seven".