1147159247 has 24 divisors (see below), whose sum is σ = 1333358208. Its totient is φ = 980020800.

The previous prime is 1147159187. The next prime is 1147159249. The reversal of 1147159247 is 7429517411.

It is not a de Polignac number, because 1147159247 - 2¹² = 1147155151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147159249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210497 + ... + 215877.

It is an arithmetic number, because the mean of its divisors is an integer number (55556592).

Almost surely, 2^1147159247 is an apocalyptic number.

1147159247 is a deficient number, since it is larger than the sum of its proper divisors (186198961).

1147159247 is a wasteful number, since it uses less digits than its factorization.

1147159247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5471 (or 5448 counting only the distinct ones).

The product of its digits is 70560, while the sum is 41.

The square root of 1147159247 is about 33869.7393996470. The cubic root of 1147159247 is about 1046.8261673006.

The spelling of 1147159247 in words is "one billion, one hundred forty-seven million, one hundred fifty-nine thousand, two hundred forty-seven".