11948689 has 4 divisors (see below), whose sum is σ = 12058420. Its totient is φ = 11838960.

The previous prime is 11948687. The next prime is 11948693. The reversal of 11948689 is 98684911.

11948689 = 117² + 118² + ... + 334².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7980625 + 3968064 = 2825^2 + 1992^2 .

It is a cyclic number.

It is not a de Polignac number, because 11948689 - 2¹ = 11948687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11948687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54702 + ... + 54919.

It is an arithmetic number, because the mean of its divisors is an integer number (3014605).

Almost surely, 2^11948689 is an apocalyptic number.

It is an amenable number.

11948689 is a deficient number, since it is larger than the sum of its proper divisors (109731).

11948689 is a wasteful number, since it uses less digits than its factorization.

11948689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109730.

The product of its digits is 124416, while the sum is 46.

The square root of 11948689 is about 3456.6875762788. The cubic root of 11948689 is about 228.6160687923.

The spelling of 11948689 in words is "eleven million, nine hundred forty-eight thousand, six hundred eighty-nine".