11973397 has 2 divisors, whose sum is σ = 11973398. Its totient is φ = 11973396.

The previous prime is 11973361. The next prime is 11973419. The reversal of 11973397 is 79337911.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 4498641 = 2734^2 + 2121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11973397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11973197) 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, 5986698 + 5986699.

It is an arithmetic number, because the mean of its divisors is an integer number (5986699).

Almost surely, 2^11973397 is an apocalyptic number.

It is an amenable number.

11973397 is a deficient number, since it is larger than the sum of its proper divisors (1).

11973397 is an equidigital number, since it uses as much as digits as its factorization.

11973397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35721, while the sum is 40.

The square root of 11973397 is about 3460.2596723367. The cubic root of 11973397 is about 228.7735409298.

The spelling of 11973397 in words is "eleven million, nine hundred seventy-three thousand, three hundred ninety-seven".