1169991396 has 36 divisors (see below), whose sum is σ = 3379975872. Its totient is φ = 334283184.

The previous prime is 1169991353. The next prime is 1169991461. The reversal of 1169991396 is 6931999611.

1169991396 is a `hidden beast` number, since 1 + 169 + 9 + 91 + 396 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2321160 + ... + 2321663.

Almost surely, 2^1169991396 is an apocalyptic number.

It is an amenable number.

1169991396 is an abundant number, since it is smaller than the sum of its proper divisors (2209984476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1169991396 is a wasteful number, since it uses less digits than its factorization.

1169991396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4642840 (or 4642835 counting only the distinct ones).

The product of its digits is 708588, while the sum is 54.

The square root of 1169991396 is about 34205.1369826229. The cubic root of 1169991396 is about 1053.7256600382.

The spelling of 1169991396 in words is "one billion, one hundred sixty-nine million, nine hundred ninety-one thousand, three hundred ninety-six".