26989201 has 4 divisors (see below), whose sum is σ = 27028404. Its totient is φ = 26950000.

The previous prime is 26989199. The next prime is 26989231. The reversal of 26989201 is 10298962.

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 22043025 + 4946176 = 4695^2 + 2224^2 .

It is a cyclic number.

It is not a de Polignac number, because 26989201 - 2¹ = 26989199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26989231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18550 + ... + 19951.

It is an arithmetic number, because the mean of its divisors is an integer number (6757101).

Almost surely, 2^26989201 is an apocalyptic number.

It is an amenable number.

26989201 is a deficient number, since it is larger than the sum of its proper divisors (39203).

26989201 is an equidigital number, since it uses as much as digits as its factorization.

26989201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39202.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 26989201 is about 5195.1131845225. The cubic root of 26989201 is about 299.9599983702.

The spelling of 26989201 in words is "twenty-six million, nine hundred eighty-nine thousand, two hundred one".