12001394 has 16 divisors (see below), whose sum is σ = 18624408. Its totient is φ = 5795712.

The previous prime is 12001387. The next prime is 12001411. The reversal of 12001394 is 49310021.

It can be written as a sum of positive squares in 4 ways, for example, as 11992369 + 9025 = 3463^2 + 95^2 .

It is a Curzon number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 11102 + ... + 12134.

Almost surely, 2^12001394 is an apocalyptic number.

12001394 is a deficient number, since it is larger than the sum of its proper divisors (6623014).

12001394 is a wasteful number, since it uses less digits than its factorization.

12001394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12001394 is about 3464.3028158635. The cubic root of 12001394 is about 228.9517133433.

The spelling of 12001394 in words is "twelve million, one thousand, three hundred ninety-four".