26968409 has 8 divisors (see below), whose sum is σ = 30751560. Its totient is φ = 23429376.

The previous prime is 26968399. The next prime is 26968421. The reversal of 26968409 is 90486962.

It can be written as a sum of positive squares in 4 ways, for example, as 394384 + 26574025 = 628^2 + 5155^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26968409 - 2²⁰ = 25919833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26968409.

It is not an unprimeable number, because it can be changed into a prime (26968499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60794 + ... + 61235.

It is an arithmetic number, because the mean of its divisors is an integer number (3843945).

Almost surely, 2^26968409 is an apocalyptic number.

It is an amenable number.

26968409 is a deficient number, since it is larger than the sum of its proper divisors (3783151).

26968409 is a wasteful number, since it uses less digits than its factorization.

26968409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122059.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 26968409 is about 5193.1116876108. Note that the first 3 decimals coincide. The cubic root of 26968409 is about 299.8829506337.

The spelling of 26968409 in words is "twenty-six million, nine hundred sixty-eight thousand, four hundred nine".