1249684044 has 36 divisors (see below), whose sum is σ = 3392001144. Its totient is φ = 357052416.

The previous prime is 1249684031. The next prime is 1249684097. The reversal of 1249684044 is 4404869421.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1249683987 and 1249684005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1062069 + ... + 1063244.

It is an arithmetic number, because the mean of its divisors is an integer number (94222254).

Almost surely, 2^1249684044 is an apocalyptic number.

1249684044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1249684044 is an abundant number, since it is smaller than the sum of its proper divisors (2142317100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249684044 is a wasteful number, since it uses less digits than its factorization.

1249684044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125334 (or 2125325 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 1249684044 is about 35350.8704843318. The cubic root of 1249684044 is about 1077.1265764922.

The spelling of 1249684044 in words is "one billion, two hundred forty-nine million, six hundred eighty-four thousand, forty-four".