26421469 has 2 divisors, whose sum is σ = 26421470. Its totient is φ = 26421468.

The previous prime is 26421463. The next prime is 26421487. The reversal of 26421469 is 96412462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21734244 + 4687225 = 4662^2 + 2165^2 .

It is a cyclic number.

It is not a de Polignac number, because 26421469 - 2¹⁹ = 25897181 is a prime.

It is a super-2 number, since 2×26421469² = 1396188048235922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26421463) 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 as a sum of consecutive naturals, namely, 13210734 + 13210735.

It is an arithmetic number, because the mean of its divisors is an integer number (13210735).

Almost surely, 2^26421469 is an apocalyptic number.

It is an amenable number.

26421469 is a deficient number, since it is larger than the sum of its proper divisors (1).

26421469 is an equidigital number, since it uses as much as digits as its factorization.

26421469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 26421469 is about 5140.1818061232. The cubic root of 26421469 is about 297.8418037877.

The spelling of 26421469 in words is "twenty-six million, four hundred twenty-one thousand, four hundred sixty-nine".