11387289 has 8 divisors (see below), whose sum is σ = 15982240. Its totient is φ = 7191936.

The previous prime is 11387287. The next prime is 11387291. The reversal of 11387289 is 98278311.

11387289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11387287) and next prime (11387291).

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

It is not a de Polignac number, because 11387289 - 2¹ = 11387287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11387281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99832 + ... + 99945.

It is an arithmetic number, because the mean of its divisors is an integer number (1997780).

Almost surely, 2^11387289 is an apocalyptic number.

11387289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11387289 is a deficient number, since it is larger than the sum of its proper divisors (4594951).

11387289 is a wasteful number, since it uses less digits than its factorization.

11387289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199799.

The product of its digits is 24192, while the sum is 39.

The square root of 11387289 is about 3374.5057415865. The cubic root of 11387289 is about 224.9780324232.

The spelling of 11387289 in words is "eleven million, three hundred eighty-seven thousand, two hundred eighty-nine".