11878449 has 24 divisors (see below), whose sum is σ = 17836896. Its totient is φ = 7022400.

The previous prime is 11878441. The next prime is 11878457. The reversal of 11878449 is 94487811.

It is an interprime number because it is at equal distance from previous prime (11878441) and next prime (11878457).

It is not a de Polignac number, because 11878449 - 2³ = 11878441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11878449.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11878441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15229 + ... + 15989.

It is an arithmetic number, because the mean of its divisors is an integer number (743204).

Almost surely, 2^11878449 is an apocalyptic number.

It is an amenable number.

11878449 is a deficient number, since it is larger than the sum of its proper divisors (5958447).

11878449 is a wasteful number, since it uses less digits than its factorization.

11878449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 818 counting only the distinct ones).

The product of its digits is 64512, while the sum is 42.

The square root of 11878449 is about 3446.5125852084. The cubic root of 11878449 is about 228.1672172821.

The spelling of 11878449 in words is "eleven million, eight hundred seventy-eight thousand, four hundred forty-nine".