12917394 has 48 divisors (see below), whose sum is σ = 33179328. Its totient is φ = 3689712.

The previous prime is 12917389. The next prime is 12917431. The reversal of 12917394 is 49371921.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1504 + ... + 5300.

It is an arithmetic number, because the mean of its divisors is an integer number (691236).

Almost surely, 2^12917394 is an apocalyptic number.

12917394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12917394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16589664).

12917394 is an abundant number, since it is smaller than the sum of its proper divisors (20261934).

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

12917394 is an equidigital number, since it uses as much as digits as its factorization.

12917394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821 (or 3809 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 12917394 is about 3594.0776285439. The cubic root of 12917394 is about 234.6343733361.

The spelling of 12917394 in words is "twelve million, nine hundred seventeen thousand, three hundred ninety-four".