12979155 has 32 divisors (see below), whose sum is σ = 24081408. Its totient is φ = 5846400.

The previous prime is 12979151. The next prime is 12979159. The reversal of 12979155 is 55197921.

12979155 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12979151) and next prime (12979159).

It is not a de Polignac number, because 12979155 - 2² = 12979151 is a prime.

12979155 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (12979151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6585 + ... + 8325.

It is an arithmetic number, because the mean of its divisors is an integer number (752544).

Almost surely, 2^12979155 is an apocalyptic number.

12979155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12979155 is a deficient number, since it is larger than the sum of its proper divisors (11102253).

12979155 is a wasteful number, since it uses less digits than its factorization.

12979155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827.

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

The square root of 12979155 is about 3602.6594343623. The cubic root of 12979155 is about 235.0077257155.

The spelling of 12979155 in words is "twelve million, nine hundred seventy-nine thousand, one hundred fifty-five".