11939155 has 8 divisors (see below), whose sum is σ = 14821200. Its totient is φ = 9221856.

The previous prime is 11939113. The next prime is 11939177. The reversal of 11939155 is 55193911.

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 11939155 - 2⁹ = 11938643 is a prime.

It is a super-2 number, since 2×11939155² = 285086844228050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11939155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41025 + ... + 41314.

It is an arithmetic number, because the mean of its divisors is an integer number (1852650).

Almost surely, 2^11939155 is an apocalyptic number.

11939155 is a deficient number, since it is larger than the sum of its proper divisors (2882045).

11939155 is an equidigital number, since it uses as much as digits as its factorization.

11939155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82373.

The product of its digits is 6075, while the sum is 34.

The square root of 11939155 is about 3455.3082351651. The cubic root of 11939155 is about 228.5552474594. Note that the first 3 decimals are identical.

The spelling of 11939155 in words is "eleven million, nine hundred thirty-nine thousand, one hundred fifty-five".