1447139748 has 12 divisors (see below), whose sum is σ = 3376659440. Its totient is φ = 482379912.

The previous prime is 1447139723. The next prime is 1447139753. The reversal of 1447139748 is 8479317441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1447139697 and 1447139706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60297478 + ... + 60297501.

Almost surely, 2^1447139748 is an apocalyptic number.

It is an amenable number.

1447139748 is an abundant number, since it is smaller than the sum of its proper divisors (1929519692).

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

1447139748 is a wasteful number, since it uses less digits than its factorization.

1447139748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120594986 (or 120594984 counting only the distinct ones).

The product of its digits is 677376, while the sum is 48.

The square root of 1447139748 is about 38041.2900412171. The cubic root of 1447139748 is about 1131.1064808700.

The spelling of 1447139748 in words is "one billion, four hundred forty-seven million, one hundred thirty-nine thousand, seven hundred forty-eight".