11679421 has 6 divisors (see below), whose sum is σ = 12647130. Its totient is φ = 10780848.

The previous prime is 11679419. The next prime is 11679427. The reversal of 11679421 is 12497611.

It can be written as a sum of positive squares in 3 ways, for example, as 24025 + 11655396 = 155^2 + 3414^2 .

It is not a de Polignac number, because 11679421 - 2¹ = 11679419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11679427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34386 + ... + 34723.

It is an arithmetic number, because the mean of its divisors is an integer number (2107855).

Almost surely, 2^11679421 is an apocalyptic number.

It is an amenable number.

11679421 is a deficient number, since it is larger than the sum of its proper divisors (967709).

11679421 is an equidigital number, since it uses as much as digits as its factorization.

11679421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69135 (or 69122 counting only the distinct ones).

The product of its digits is 3024, while the sum is 31.

The square root of 11679421 is about 3417.5167885469. The cubic root of 11679421 is about 226.8856896308.

It can be divided in two parts, 11679 and 421, that added together give a square (12100 = 110²).

The spelling of 11679421 in words is "eleven million, six hundred seventy-nine thousand, four hundred twenty-one".