11863749 has 4 divisors (see below), whose sum is σ = 15818336. Its totient is φ = 7909164.

The previous prime is 11863729. The next prime is 11863751. The reversal of 11863749 is 94736811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11863749 - 2⁸ = 11863493 is a prime.

It is a super-3 number, since 3×11863749³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11863729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1977289 + ... + 1977294.

It is an arithmetic number, because the mean of its divisors is an integer number (3954584).

Almost surely, 2^11863749 is an apocalyptic number.

It is an amenable number.

11863749 is a deficient number, since it is larger than the sum of its proper divisors (3954587).

11863749 is an equidigital number, since it uses as much as digits as its factorization.

11863749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3954586.

The product of its digits is 36288, while the sum is 39.

The square root of 11863749 is about 3444.3793345101. The cubic root of 11863749 is about 228.0730567668.

The spelling of 11863749 in words is "eleven million, eight hundred sixty-three thousand, seven hundred forty-nine".