12905823 has 8 divisors (see below), whose sum is σ = 19666048. Its totient is φ = 7374744.

The previous prime is 12905803. The next prime is 12905861. The reversal of 12905823 is 32850921.

It is a happy number.

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

It is not a de Polignac number, because 12905823 - 2⁹ = 12905311 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 (12905803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307261 + ... + 307302.

It is an arithmetic number, because the mean of its divisors is an integer number (2458256).

Almost surely, 2^12905823 is an apocalyptic number.

12905823 is a deficient number, since it is larger than the sum of its proper divisors (6760225).

12905823 is an equidigital number, since it uses as much as digits as its factorization.

12905823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614573.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 12905823 is about 3592.4675363878. The cubic root of 12905823 is about 234.5642930141.

The spelling of 12905823 in words is "twelve million, nine hundred five thousand, eight hundred twenty-three".