26379421 has 2 divisors, whose sum is σ = 26379422. Its totient is φ = 26379420.

The previous prime is 26379403. The next prime is 26379497. The reversal of 26379421 is 12497362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25351225 + 1028196 = 5035^2 + 1014^2 .

It is a cyclic number.

It is not a de Polignac number, because 26379421 - 2⁷ = 26379293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26379401) 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 as a sum of consecutive naturals, namely, 13189710 + 13189711.

It is an arithmetic number, because the mean of its divisors is an integer number (13189711).

Almost surely, 2^26379421 is an apocalyptic number.

It is an amenable number.

26379421 is a deficient number, since it is larger than the sum of its proper divisors (1).

26379421 is an equidigital number, since it uses as much as digits as its factorization.

26379421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 26379421 is about 5136.0900498336. The cubic root of 26379421 is about 297.6837214650.

The spelling of 26379421 in words is "twenty-six million, three hundred seventy-nine thousand, four hundred twenty-one".