12440493 has 48 divisors (see below), whose sum is σ = 21058240. Its totient is φ = 7213536.

The previous prime is 12440489. The next prime is 12440513. The reversal of 12440493 is 39404421.

It is not a de Polignac number, because 12440493 - 2² = 12440489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 185646 + ... + 185712.

Almost surely, 2^12440493 is an apocalyptic number.

12440493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12440493 is a deficient number, since it is larger than the sum of its proper divisors (8617747).

12440493 is a wasteful number, since it uses less digits than its factorization.

12440493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 106 counting only the distinct ones).

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

The square root of 12440493 is about 3527.1083056804. The cubic root of 12440493 is about 231.7105796944.

The spelling of 12440493 in words is "twelve million, four hundred forty thousand, four hundred ninety-three".