11387749 has 8 divisors (see below), whose sum is σ = 12099960. Its totient is φ = 10696896.

The previous prime is 11387741. The next prime is 11387777. The reversal of 11387749 is 94778311.

11387749 = T₇₆₆ + T₇₆₇ + ... + T₈₀₂.

It can be written as a sum of positive squares in 4 ways, for example, as 8122500 + 3265249 = 2850^2 + 1807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11387749 - 2³ = 11387741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11387741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4234 + ... + 6379.

It is an arithmetic number, because the mean of its divisors is an integer number (1512495).

Almost surely, 2^11387749 is an apocalyptic number.

It is an amenable number.

11387749 is a deficient number, since it is larger than the sum of its proper divisors (712211).

11387749 is a wasteful number, since it uses less digits than its factorization.

11387749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10679.

The product of its digits is 42336, while the sum is 40.

The square root of 11387749 is about 3374.5738990278. The cubic root of 11387749 is about 224.9810617805.

The spelling of 11387749 in words is "eleven million, three hundred eighty-seven thousand, seven hundred forty-nine".