12791405 has 8 divisors (see below), whose sum is σ = 16745184. Its totient is φ = 9302800.

The previous prime is 12791399. The next prime is 12791413. The reversal of 12791405 is 50419721.

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

It is not a de Polignac number, because 12791405 - 2⁶ = 12791341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 116231 + ... + 116340.

It is an arithmetic number, because the mean of its divisors is an integer number (2093148).

Almost surely, 2^12791405 is an apocalyptic number.

It is an amenable number.

12791405 is a deficient number, since it is larger than the sum of its proper divisors (3953779).

12791405 is a wasteful number, since it uses less digits than its factorization.

12791405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232587.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 12791405 is about 3576.5073745206. The cubic root of 12791405 is about 233.8690491408.

The spelling of 12791405 in words is "twelve million, seven hundred ninety-one thousand, four hundred five".