12799155 has 24 divisors (see below), whose sum is σ = 21421008. Its totient is φ = 6525376.

The previous prime is 12799139. The next prime is 12799159. The reversal of 12799155 is 55199721.

12799155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12799155 - 2⁴ = 12799139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12799159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7129 + ... + 8741.

It is an arithmetic number, because the mean of its divisors is an integer number (892542).

Almost surely, 2^12799155 is an apocalyptic number.

12799155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12799155 is a deficient number, since it is larger than the sum of its proper divisors (8621853).

12799155 is a wasteful number, since it uses less digits than its factorization.

12799155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667 (or 1644 counting only the distinct ones).

The product of its digits is 28350, while the sum is 39.

The square root of 12799155 is about 3577.5906697106. The cubic root of 12799155 is about 233.9162714542.

The spelling of 12799155 in words is "twelve million, seven hundred ninety-nine thousand, one hundred fifty-five".