11423749 has 2 divisors, whose sum is σ = 11423750. Its totient is φ = 11423748.

The previous prime is 11423747. The next prime is 11423759. The reversal of 11423749 is 94732411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11390625 + 33124 = 3375^2 + 182^2 .

It is an emirp because it is prime and its reverse (94732411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11423749 - 2¹ = 11423747 is a prime.

Together with 11423747, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11423749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11423747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5711874 + 5711875.

It is an arithmetic number, because the mean of its divisors is an integer number (5711875).

Almost surely, 2^11423749 is an apocalyptic number.

It is an amenable number.

11423749 is a deficient number, since it is larger than the sum of its proper divisors (1).

11423749 is an equidigital number, since it uses as much as digits as its factorization.

11423749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 11423749 is about 3379.9036968529. The cubic root of 11423749 is about 225.2178893400.

The spelling of 11423749 in words is "eleven million, four hundred twenty-three thousand, seven hundred forty-nine".