11381249 has 4 divisors (see below), whose sum is σ = 12415920. Its totient is φ = 10346580.

The previous prime is 11381233. The next prime is 11381261. The reversal of 11381249 is 94218311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94218311 = 11 ⋅8565301.

It is a cyclic number.

It is not a de Polignac number, because 11381249 - 2⁴ = 11381233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11381219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517319 + ... + 517340.

It is an arithmetic number, because the mean of its divisors is an integer number (3103980).

Almost surely, 2^11381249 is an apocalyptic number.

It is an amenable number.

11381249 is a deficient number, since it is larger than the sum of its proper divisors (1034671).

11381249 is a wasteful number, since it uses less digits than its factorization.

11381249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034670.

The product of its digits is 1728, while the sum is 29.

The square root of 11381249 is about 3373.6106770047. The cubic root of 11381249 is about 224.9382480741.

The spelling of 11381249 in words is "eleven million, three hundred eighty-one thousand, two hundred forty-nine".