1169489979 has 24 divisors (see below), whose sum is σ = 1934211552. Its totient is φ = 667025280.

The previous prime is 1169489977. The next prime is 1169490013. The reversal of 1169489979 is 9799849611.

1169489979 is a `hidden beast` number, since 1 + 1 + 69 + 489 + 97 + 9 = 666.

It is not a de Polignac number, because 1169489979 - 2¹ = 1169489977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1169489977) 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 23 ways as a sum of consecutive naturals, for example, 16927 + ... + 51239.

It is an arithmetic number, because the mean of its divisors is an integer number (80592148).

Almost surely, 2^1169489979 is an apocalyptic number.

1169489979 is a deficient number, since it is larger than the sum of its proper divisors (764721573).

1169489979 is a wasteful number, since it uses less digits than its factorization.

1169489979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34867 (or 34864 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 63.

The square root of 1169489979 is about 34197.8066401926. The cubic root of 1169489979 is about 1053.5751086588.

The spelling of 1169489979 in words is "one billion, one hundred sixty-nine million, four hundred eighty-nine thousand, nine hundred seventy-nine".