11431449 has 16 divisors (see below), whose sum is σ = 17147840. Its totient is φ = 7619508.

The previous prime is 11431447. The next prime is 11431471. The reversal of 11431449 is 94413411.

It is not a de Polignac number, because 11431449 - 2¹ = 11431447 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 not an unprimeable number, because it can be changed into a prime (11431447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427 + ... + 4800.

It is an arithmetic number, because the mean of its divisors is an integer number (1071740).

Almost surely, 2^11431449 is an apocalyptic number.

It is an amenable number.

11431449 is a deficient number, since it is larger than the sum of its proper divisors (5716391).

11431449 is an frugal number, since it uses more digits than its factorization.

11431449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5248 (or 5230 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 11431449 is about 3381.0425906812. The cubic root of 11431449 is about 225.2684795115.

The spelling of 11431449 in words is "eleven million, four hundred thirty-one thousand, four hundred forty-nine".