1244679147 has 6 divisors (see below), whose sum is σ = 1797869892. Its totient is φ = 829786092.

The previous prime is 1244679143. The next prime is 1244679187. The reversal of 1244679147 is 7419764421.

It is not a de Polignac number, because 1244679147 - 2² = 1244679143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1244679143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69148833 + ... + 69148850.

It is an arithmetic number, because the mean of its divisors is an integer number (299644982).

Almost surely, 2^1244679147 is an apocalyptic number.

1244679147 is a deficient number, since it is larger than the sum of its proper divisors (553190745).

1244679147 is a wasteful number, since it uses less digits than its factorization.

1244679147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138297689 (or 138297686 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 1244679147 is about 35280.0105867331. The cubic root of 1244679147 is about 1075.6867137823.

The spelling of 1244679147 in words is "one billion, two hundred forty-four million, six hundred seventy-nine thousand, one hundred forty-seven".