12440408 has 8 divisors (see below), whose sum is σ = 23325780. Its totient is φ = 6220200.

The previous prime is 12440381. The next prime is 12440411. The reversal of 12440408 is 80404421.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777518 + ... + 777533.

Almost surely, 2^12440408 is an apocalyptic number.

It is an amenable number.

12440408 is a deficient number, since it is larger than the sum of its proper divisors (10885372).

12440408 is a wasteful number, since it uses less digits than its factorization.

12440408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555057 (or 1555053 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 12440408 is about 3527.0962561291. The cubic root of 12440408 is about 231.7100519703.

Adding to 12440408 its reverse (80404421), we get a palindrome (92844829).

The spelling of 12440408 in words is "twelve million, four hundred forty thousand, four hundred eight".