12907394 has 4 divisors (see below), whose sum is σ = 19361094. Its totient is φ = 6453696.

The previous prime is 12907387. The next prime is 12907399. The reversal of 12907394 is 49370921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49370921 = 101 ⋅488821.

It can be written as a sum of positive squares in only one way, i.e., 12159169 + 748225 = 3487^2 + 865^2 .

It is not an unprimeable number, because it can be changed into a prime (12907399) 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 as a sum of consecutive naturals, namely, 3226847 + ... + 3226850.

Almost surely, 2^12907394 is an apocalyptic number.

12907394 is a deficient number, since it is larger than the sum of its proper divisors (6453700).

12907394 is an equidigital number, since it uses as much as digits as its factorization.

12907394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6453699.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 12907394 is about 3592.6861816752. The cubic root of 12907394 is about 234.5738103085.

The spelling of 12907394 in words is "twelve million, nine hundred seven thousand, three hundred ninety-four".