1147980547 has 8 divisors (see below), whose sum is σ = 1325504096. Its totient is φ = 973838592.

The previous prime is 1147980527. The next prime is 1147980557. The reversal of 1147980547 is 7450897411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1147980547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1147980497 and 1147980506.

It is not an unprimeable number, because it can be changed into a prime (1147980517) 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 7 ways as a sum of consecutive naturals, for example, 844668 + ... + 846025.

It is an arithmetic number, because the mean of its divisors is an integer number (165688012).

Almost surely, 2^1147980547 is an apocalyptic number.

1147980547 is a deficient number, since it is larger than the sum of its proper divisors (177523549).

1147980547 is an equidigital number, since it uses as much as digits as its factorization.

1147980547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690797.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 1147980547 is about 33881.8616224079. The cubic root of 1147980547 is about 1047.0759301345.

The spelling of 1147980547 in words is "one billion, one hundred forty-seven million, nine hundred eighty thousand, five hundred forty-seven".