11279197 has 2 divisors, whose sum is σ = 11279198. Its totient is φ = 11279196.

The previous prime is 11279189. The next prime is 11279209. The reversal of 11279197 is 79197211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8826841 + 2452356 = 2971^2 + 1566^2 .

It is a cyclic number.

It is not a de Polignac number, because 11279197 - 2³ = 11279189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11279137) 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, 5639598 + 5639599.

It is an arithmetic number, because the mean of its divisors is an integer number (5639599).

Almost surely, 2^11279197 is an apocalyptic number.

It is an amenable number.

11279197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11279197 is an equidigital number, since it uses as much as digits as its factorization.

11279197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7938, while the sum is 37.

The square root of 11279197 is about 3358.4515777364. The cubic root of 11279197 is about 224.2639122094.

It can be divided in two parts, 11279 and 197, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 11279197 in words is "eleven million, two hundred seventy-nine thousand, one hundred ninety-seven".