11155969 has 8 divisors (see below), whose sum is σ = 12352608. Its totient is φ = 9989760.

The previous prime is 11155957. The next prime is 11155973. The reversal of 11155969 is 96955111.

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

It is not a de Polignac number, because 11155969 - 2⁷ = 11155841 is a prime.

It is a super-2 number, since 2×11155969² = 248911288657922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11155769) 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, 6832 + ... + 8305.

It is an arithmetic number, because the mean of its divisors is an integer number (1544076).

Almost surely, 2^11155969 is an apocalyptic number.

It is an amenable number.

11155969 is a deficient number, since it is larger than the sum of its proper divisors (1196639).

11155969 is a wasteful number, since it uses less digits than its factorization.

11155969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15215.

The product of its digits is 12150, while the sum is 37.

The square root of 11155969 is about 3340.0552390642. The cubic root of 11155969 is about 223.4442069710. Note that the first 3 decimals are identical.

It can be divided in two parts, 111559 and 69, that added together give a triangular number (111628 = T₄₇₂).

The spelling of 11155969 in words is "eleven million, one hundred fifty-five thousand, nine hundred sixty-nine".