12440785 has 16 divisors (see below), whose sum is σ = 17160192. Its totient is φ = 8481600.

The previous prime is 12440741. The next prime is 12440809. The reversal of 12440785 is 58704421.

It is not a de Polignac number, because 12440785 - 2⁷ = 12440657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5755 + ... + 7615.

It is an arithmetic number, because the mean of its divisors is an integer number (1072512).

Almost surely, 2^12440785 is an apocalyptic number.

It is an amenable number.

12440785 is a deficient number, since it is larger than the sum of its proper divisors (4719407).

12440785 is a wasteful number, since it uses less digits than its factorization.

12440785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 12440785 is about 3527.1496991197. The cubic root of 12440785 is about 231.7123925636.

It can be divided in two parts, 12440 and 785, that added together give a square (13225 = 115²).

The spelling of 12440785 in words is "twelve million, four hundred forty thousand, seven hundred eighty-five".