1247938944 has 64 divisors (see below), whose sum is σ = 3788394240. Its totient is φ = 356553216.

The previous prime is 1247938897. The next prime is 1247938949. The reversal of 1247938944 is 4498397421.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247938949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229444 + ... + 234819.

It is an arithmetic number, because the mean of its divisors is an integer number (59193660).

Almost surely, 2^1247938944 is an apocalyptic number.

1247938944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1247938944 is an abundant number, since it is smaller than the sum of its proper divisors (2540455296).

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

1247938944 is an equidigital number, since it uses as much as digits as its factorization.

1247938944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464287 (or 464275 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 1247938944 is about 35326.1793009094. The cubic root of 1247938944 is about 1076.6249645761.

The spelling of 1247938944 in words is "one billion, two hundred forty-seven million, nine hundred thirty-eight thousand, nine hundred forty-four".