1249288844 has 12 divisors (see below), whose sum is σ = 2186557464. Its totient is φ = 624558144.

The previous prime is 1249288841. The next prime is 1249288849. The reversal of 1249288844 is 4488829421.

It is a junction number, because it is equal to n+sod(n) for n = 1249288792 and 1249288801.

It is not an unprimeable number, because it can be changed into a prime (1249288841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19844 + ... + 53780.

It is an arithmetic number, because the mean of its divisors is an integer number (182213122).

Almost surely, 2^1249288844 is an apocalyptic number.

It is an amenable number.

1249288844 is a deficient number, since it is larger than the sum of its proper divisors (937268620).

1249288844 is a wasteful number, since it uses less digits than its factorization.

1249288844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43144 (or 43142 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 50.

The square root of 1249288844 is about 35345.2803638619. The cubic root of 1249288844 is about 1077.0130210419.

The spelling of 1249288844 in words is "one billion, two hundred forty-nine million, two hundred eighty-eight thousand, eight hundred forty-four".