12992905 has 8 divisors (see below), whose sum is σ = 15805512. Its totient is φ = 10251648.

The previous prime is 12992867. The next prime is 12992933. The reversal of 12992905 is 50929921.

It can be written as a sum of positive squares in 4 ways, for example, as 226576 + 12766329 = 476^2 + 3573^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12992905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17434 + ... + 18163.

It is an arithmetic number, because the mean of its divisors is an integer number (1975689).

Almost surely, 2^12992905 is an apocalyptic number.

It is an amenable number.

12992905 is a deficient number, since it is larger than the sum of its proper divisors (2812607).

12992905 is an equidigital number, since it uses as much as digits as its factorization.

12992905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35675.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 12992905 is about 3604.5672417088. The cubic root of 12992905 is about 235.0906847836.

The spelling of 12992905 in words is "twelve million, nine hundred ninety-two thousand, nine hundred five".