11974321 has 2 divisors, whose sum is σ = 11974322. Its totient is φ = 11974320.

The previous prime is 11974309. The next prime is 11974367. The reversal of 11974321 is 12347911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11390625 + 583696 = 3375^2 + 764^2 .

It is an emirp because it is prime and its reverse (12347911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11974321 is a prime.

It is a super-2 number, since 2×11974321² = 286768726822082, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11974321.

It is not a weakly prime, because it can be changed into another prime (11974021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5987160 + 5987161.

It is an arithmetic number, because the mean of its divisors is an integer number (5987161).

Almost surely, 2^11974321 is an apocalyptic number.

It is an amenable number.

11974321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11974321 is an equidigital number, since it uses as much as digits as its factorization.

11974321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 11974321 is about 3460.3931857522. The cubic root of 11974321 is about 228.7794256790.

The spelling of 11974321 in words is "eleven million, nine hundred seventy-four thousand, three hundred twenty-one".