11642749 has 2 divisors, whose sum is σ = 11642750. Its totient is φ = 11642748.

The previous prime is 11642731. The next prime is 11642759. The reversal of 11642749 is 94724611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10304100 + 1338649 = 3210^2 + 1157^2 .

It is an emirp because it is prime and its reverse (94724611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11642749 - 2⁷ = 11642621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11642759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5821374 + 5821375.

It is an arithmetic number, because the mean of its divisors is an integer number (5821375).

Almost surely, 2^11642749 is an apocalyptic number.

It is an amenable number.

11642749 is a deficient number, since it is larger than the sum of its proper divisors (1).

11642749 is an equidigital number, since it uses as much as digits as its factorization.

11642749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 11642749 is about 3412.1472711476. The cubic root of 11642749 is about 226.6479759194.

The spelling of 11642749 in words is "eleven million, six hundred forty-two thousand, seven hundred forty-nine".