26219969 has 2 divisors, whose sum is σ = 26219970. Its totient is φ = 26219968.

The previous prime is 26219959. The next prime is 26219971. The reversal of 26219969 is 96991262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18447025 + 7772944 = 4295^2 + 2788^2 .

It is a cyclic number.

It is not a de Polignac number, because 26219969 - 2⁴ = 26219953 is a prime.

It is a super-2 number, since 2×26219969² = 1374973548721922, which contains 22 as substring.

Together with 26219971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26219929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13109984 + 13109985.

It is an arithmetic number, because the mean of its divisors is an integer number (13109985).

Almost surely, 2^26219969 is an apocalyptic number.

It is an amenable number.

26219969 is a deficient number, since it is larger than the sum of its proper divisors (1).

26219969 is an equidigital number, since it uses as much as digits as its factorization.

26219969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 44.

The square root of 26219969 is about 5120.5438187755. The cubic root of 26219969 is about 297.0827198385.

The spelling of 26219969 in words is "twenty-six million, two hundred nineteen thousand, nine hundred sixty-nine".