11992779 has 14 divisors (see below), whose sum is σ = 17982036. Its totient is φ = 7994700.

The previous prime is 11992741. The next prime is 11992793. The reversal of 11992779 is 97729911.

It is a de Polignac number, because none of the positive numbers 2^k-11992779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11992709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7497 + ... + 8954.

Almost surely, 2^11992779 is an apocalyptic number.

11992779 is a deficient number, since it is larger than the sum of its proper divisors (5989257).

11992779 is an frugal number, since it uses more digits than its factorization.

11992779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16469 (or 16454 counting only the distinct ones).

The product of its digits is 71442, while the sum is 45.

The square root of 11992779 is about 3463.0591967219. The cubic root of 11992779 is about 228.8969171767.

The spelling of 11992779 in words is "eleven million, nine hundred ninety-two thousand, seven hundred seventy-nine".