11990749 has 2 divisors, whose sum is σ = 11990750. Its totient is φ = 11990748.

The previous prime is 11990743. The next prime is 11990777. The reversal of 11990749 is 94709911.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11682724 + 308025 = 3418^2 + 555^2 .

It is a cyclic number.

It is not a de Polignac number, because 11990749 - 2¹³ = 11982557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11990743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5995374 + 5995375.

It is an arithmetic number, because the mean of its divisors is an integer number (5995375).

Almost surely, 2^11990749 is an apocalyptic number.

It is an amenable number.

11990749 is a deficient number, since it is larger than the sum of its proper divisors (1).

11990749 is an equidigital number, since it uses as much as digits as its factorization.

11990749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 11990749 is about 3462.7660908586. The cubic root of 11990749 is about 228.8840014335.

The spelling of 11990749 in words is "eleven million, nine hundred ninety thousand, seven hundred forty-nine".