11946397 has 2 divisors, whose sum is σ = 11946398. Its totient is φ = 11946396.

The previous prime is 11946349. The next prime is 11946401. The reversal of 11946397 is 79364911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11758041 + 188356 = 3429^2 + 434^2 .

It is an emirp because it is prime and its reverse (79364911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11946397 - 2¹⁹ = 11422109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11946797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5973198 + 5973199.

It is an arithmetic number, because the mean of its divisors is an integer number (5973199).

Almost surely, 2^11946397 is an apocalyptic number.

11946397 is the 1848-th centered heptagonal number.

It is an amenable number.

11946397 is a deficient number, since it is larger than the sum of its proper divisors (1).

11946397 is an equidigital number, since it uses as much as digits as its factorization.

11946397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 11946397 is about 3456.3560291151. The cubic root of 11946397 is about 228.6014501303.

The spelling of 11946397 in words is "eleven million, nine hundred forty-six thousand, three hundred ninety-seven".