26984401 has 2 divisors, whose sum is σ = 26984402. Its totient is φ = 26984400.

The previous prime is 26984393. The next prime is 26984411. The reversal of 26984401 is 10448962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26625600 + 358801 = 5160^2 + 599^2 .

It is a cyclic number.

It is not a de Polignac number, because 26984401 - 2³ = 26984393 is a prime.

It is not a weakly prime, because it can be changed into another prime (26984411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13492200 + 13492201.

It is an arithmetic number, because the mean of its divisors is an integer number (13492201).

Almost surely, 2^26984401 is an apocalyptic number.

It is an amenable number.

26984401 is a deficient number, since it is larger than the sum of its proper divisors (1).

26984401 is an equidigital number, since it uses as much as digits as its factorization.

26984401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 26984401 is about 5194.6511913698. The cubic root of 26984401 is about 299.9422147962.

The spelling of 26984401 in words is "twenty-six million, nine hundred eighty-four thousand, four hundred one".