11940155 has 4 divisors (see below), whose sum is σ = 14328192. Its totient is φ = 9552120.

The previous prime is 11940127. The next prime is 11940157. The reversal of 11940155 is 55104911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55104911 = 283 ⋅194717.

It is not a de Polignac number, because 11940155 - 2⁶ = 11940091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11940157) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1194011 + ... + 1194020.

It is an arithmetic number, because the mean of its divisors is an integer number (3582048).

Almost surely, 2^11940155 is an apocalyptic number.

11940155 is a deficient number, since it is larger than the sum of its proper divisors (2388037).

11940155 is an equidigital number, since it uses as much as digits as its factorization.

11940155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388036.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 11940155 is about 3455.4529370258. The cubic root of 11940155 is about 228.5616283931.

The spelling of 11940155 in words is "eleven million, nine hundred forty thousand, one hundred fifty-five".