1147478727 has 16 divisors (see below), whose sum is σ = 1576373760. Its totient is φ = 742073472.

The previous prime is 1147478719. The next prime is 1147478729. The reversal of 1147478727 is 7278747411.

It is not a de Polignac number, because 1147478727 - 2³ = 1147478719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147478729) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20077 + ... + 51942.

It is an arithmetic number, because the mean of its divisors is an integer number (98523360).

Almost surely, 2^1147478727 is an apocalyptic number.

1147478727 is a deficient number, since it is larger than the sum of its proper divisors (428895033).

1147478727 is a wasteful number, since it uses less digits than its factorization.

1147478727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72182.

The product of its digits is 614656, while the sum is 48.

The square root of 1147478727 is about 33874.4553756957. The cubic root of 1147478727 is about 1046.9233374719.

The spelling of 1147478727 in words is "one billion, one hundred forty-seven million, four hundred seventy-eight thousand, seven hundred twenty-seven".