11501389 has 4 divisors (see below), whose sum is σ = 11516220. Its totient is φ = 11486560.

The previous prime is 11501377. The next prime is 11501411. The reversal of 11501389 is 98310511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6165289 + 5336100 = 2483^2 + 2310^2 .

It is a cyclic number.

It is not a de Polignac number, because 11501389 - 2⁷ = 11501261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11501309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6184 + ... + 7825.

It is an arithmetic number, because the mean of its divisors is an integer number (2879055).

Almost surely, 2^11501389 is an apocalyptic number.

It is an amenable number.

11501389 is a deficient number, since it is larger than the sum of its proper divisors (14831).

11501389 is an equidigital number, since it uses as much as digits as its factorization.

11501389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14830.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 11501389 is about 3391.3697822561. The cubic root of 11501389 is about 225.7269590056.

The spelling of 11501389 in words is "eleven million, five hundred one thousand, three hundred eighty-nine".