11889155 has 8 divisors (see below), whose sum is σ = 15018000. Its totient is φ = 9010656.

The previous prime is 11889121. The next prime is 11889179. The reversal of 11889155 is 55198811.

It is a happy number.

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 11889155 - 2¹⁴ = 11872771 is a prime.

It is a super-2 number, since 2×11889155² = 282704013228050, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 62480 + ... + 62669.

It is an arithmetic number, because the mean of its divisors is an integer number (1877250).

Almost surely, 2^11889155 is an apocalyptic number.

11889155 is a deficient number, since it is larger than the sum of its proper divisors (3128845).

11889155 is a wasteful number, since it uses less digits than its factorization.

11889155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125173.

The product of its digits is 14400, while the sum is 38.

The square root of 11889155 is about 3448.0653996118. The cubic root of 11889155 is about 228.2357454407.

The spelling of 11889155 in words is "eleven million, eight hundred eighty-nine thousand, one hundred fifty-five".