12979575 has 96 divisors (see below), whose sum is σ = 28331520. Its totient is φ = 5702400.

The previous prime is 12979573. The next prime is 12979579. The reversal of 12979575 is 57597921.

12979575 is a `hidden beast` number, since 1 + 2 + 9 + 79 + 575 = 666.

It is not a de Polignac number, because 12979575 - 2¹ = 12979573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12979575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12979573) 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 95 ways as a sum of consecutive naturals, for example, 193692 + ... + 193758.

It is an arithmetic number, because the mean of its divisors is an integer number (295120).

Almost surely, 2^12979575 is an apocalyptic number.

12979575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12979575 is an abundant number, since it is smaller than the sum of its proper divisors (15351945).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12979575 is a wasteful number, since it uses less digits than its factorization.

12979575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 123 counting only the distinct ones).

The product of its digits is 198450, while the sum is 45.

The square root of 12979575 is about 3602.7177241632. The cubic root of 12979575 is about 235.0102606053.

The spelling of 12979575 in words is "twelve million, nine hundred seventy-nine thousand, five hundred seventy-five".