1244436879 has 24 divisors (see below), whose sum is σ = 1977233328. Its totient is φ = 693759360.

The previous prime is 1244436859. The next prime is 1244436883. The reversal of 1244436879 is 9786344421.

It is not a de Polignac number, because 1244436879 - 2¹⁶ = 1244371343 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244436859) 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, 97212 + ... + 109265.

It is an arithmetic number, because the mean of its divisors is an integer number (82384722).

Almost surely, 2^1244436879 is an apocalyptic number.

1244436879 is a deficient number, since it is larger than the sum of its proper divisors (732796449).

1244436879 is a wasteful number, since it uses less digits than its factorization.

1244436879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206535 (or 206528 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 1244436879 is about 35276.5769172691. The cubic root of 1244436879 is about 1075.6169176480.

The spelling of 1244436879 in words is "one billion, two hundred forty-four million, four hundred thirty-six thousand, eight hundred seventy-nine".