12440394 has 24 divisors (see below), whose sum is σ = 27101412. Its totient is φ = 4124160.

The previous prime is 12440381. The next prime is 12440411. The reversal of 12440394 is 49304421.

It can be written as a sum of positive squares in 2 ways, for example, as 12341169 + 99225 = 3513^2 + 315^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1684 + ... + 5264.

Almost surely, 2^12440394 is an apocalyptic number.

12440394 is an abundant number, since it is smaller than the sum of its proper divisors (14661018).

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

12440394 is a wasteful number, since it uses less digits than its factorization.

12440394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3782 (or 3779 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 12440394 is about 3527.0942714932. The cubic root of 12440394 is about 231.7099650508.

The spelling of 12440394 in words is "twelve million, four hundred forty thousand, three hundred ninety-four".