11398155 has 16 divisors (see below), whose sum is σ = 18537504. Its totient is φ = 5978880.

The previous prime is 11398129. The next prime is 11398159. The reversal of 11398155 is 55189311.

It is not a de Polignac number, because 11398155 - 2⁶ = 11398091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11398159) 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 15 ways as a sum of consecutive naturals, for example, 5314 + ... + 7143.

It is an arithmetic number, because the mean of its divisors is an integer number (1158594).

Almost surely, 2^11398155 is an apocalyptic number.

11398155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11398155 is a deficient number, since it is larger than the sum of its proper divisors (7139349).

11398155 is a wasteful number, since it uses less digits than its factorization.

11398155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12526.

The product of its digits is 5400, while the sum is 33.

The square root of 11398155 is about 3376.1153712514. The cubic root of 11398155 is about 225.0495693256.

The spelling of 11398155 in words is "eleven million, three hundred ninety-eight thousand, one hundred fifty-five".