1147879009 has 32 divisors (see below), whose sum is σ = 1274144256. Its totient is φ = 1030740480.

The previous prime is 1147878997. The next prime is 1147879027. The reversal of 1147879009 is 9009787411.

It is a cyclic number.

It is not a de Polignac number, because 1147879009 - 2⁹ = 1147878497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1147879009.

It is not an unprimeable number, because it can be changed into a prime (1147879069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5826699 + ... + 5826895.

It is an arithmetic number, because the mean of its divisors is an integer number (39817008).

Almost surely, 2^1147879009 is an apocalyptic number.

It is an amenable number.

1147879009 is a deficient number, since it is larger than the sum of its proper divisors (126265247).

1147879009 is a wasteful number, since it uses less digits than its factorization.

1147879009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 1147879009 is about 33880.3631769200. The cubic root of 1147879009 is about 1047.0450582030.

The spelling of 1147879009 in words is "one billion, one hundred forty-seven million, eight hundred seventy-nine thousand, nine".