12992005 has 8 divisors (see below), whose sum is σ = 16789752. Its totient is φ = 9594048.

The previous prime is 12992003. The next prime is 12992009. The reversal of 12992005 is 50029921.

It can be written as a sum of positive squares in 4 ways, for example, as 2455489 + 10536516 = 1567^2 + 3246^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12992005 - 2¹ = 12992003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12992003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99874 + ... + 100003.

It is an arithmetic number, because the mean of its divisors is an integer number (2098719).

Almost surely, 2^12992005 is an apocalyptic number.

It is an amenable number.

12992005 is a deficient number, since it is larger than the sum of its proper divisors (3797747).

12992005 is a wasteful number, since it uses less digits than its factorization.

12992005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199895.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 12992005 is about 3604.4423979306. The cubic root of 12992005 is about 235.0852565261.

The spelling of 12992005 in words is "twelve million, nine hundred ninety-two thousand, five".