11898779 has 4 divisors (see below), whose sum is σ = 11905680. Its totient is φ = 11891880.

The previous prime is 11898763. The next prime is 11898791. The reversal of 11898779 is 97789811.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 97789811 = 7 ⋅13969973.

It is a cyclic number.

It is not a de Polignac number, because 11898779 - 2⁴ = 11898763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11898739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1634 + ... + 5144.

It is an arithmetic number, because the mean of its divisors is an integer number (2976420).

Almost surely, 2^11898779 is an apocalyptic number.

11898779 is a deficient number, since it is larger than the sum of its proper divisors (6901).

11898779 is an equidigital number, since it uses as much as digits as its factorization.

11898779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6900.

The product of its digits is 254016, while the sum is 50.

The square root of 11898779 is about 3449.4606824836. The cubic root of 11898779 is about 228.2973127093.

The spelling of 11898779 in words is "eleven million, eight hundred ninety-eight thousand, seven hundred seventy-nine".