11779989 has 16 divisors (see below), whose sum is σ = 17001600. Its totient is φ = 7212096.

The previous prime is 11779987. The next prime is 11780011. The reversal of 11779989 is 98997711.

It is not a de Polignac number, because 11779989 - 2¹ = 11779987 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11779987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8272 + ... + 9590.

It is an arithmetic number, because the mean of its divisors is an integer number (1062600).

Almost surely, 2^11779989 is an apocalyptic number.

It is an amenable number.

11779989 is a deficient number, since it is larger than the sum of its proper divisors (5221611).

11779989 is a wasteful number, since it uses less digits than its factorization.

11779989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564.

The product of its digits is 285768, while the sum is 51.

The square root of 11779989 is about 3432.1988578752. The cubic root of 11779989 is about 227.5350443137.

The spelling of 11779989 in words is "eleven million, seven hundred seventy-nine thousand, nine hundred eighty-nine".