11798789 has 4 divisors (see below), whose sum is σ = 11920524. Its totient is φ = 11677056.

The previous prime is 11798723. The next prime is 11798821. The reversal of 11798789 is 98789711.

11798789 = 38² + 39² + ... + 328².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98789711 = 2441 ⋅40471.

It can be written as a sum of positive squares in 2 ways, for example, as 1768900 + 10029889 = 1330^2 + 3167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11798789 is a prime.

It is a super-2 number, since 2×11798789² = 278422843733042, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11498789) 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, 60722 + ... + 60915.

It is an arithmetic number, because the mean of its divisors is an integer number (2980131).

Almost surely, 2^11798789 is an apocalyptic number.

It is an amenable number.

11798789 is a deficient number, since it is larger than the sum of its proper divisors (121735).

11798789 is an equidigital number, since it uses as much as digits as its factorization.

11798789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121734.

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

The square root of 11798789 is about 3434.9365350760. The cubic root of 11798789 is about 227.6560230695.

The spelling of 11798789 in words is "eleven million, seven hundred ninety-eight thousand, seven hundred eighty-nine".