26919929 has 2 divisors, whose sum is σ = 26919930. Its totient is φ = 26919928.

The previous prime is 26919911. The next prime is 26919931. The reversal of 26919929 is 92991962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26759929 + 160000 = 5173^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 26919929 - 2¹⁶ = 26854393 is a prime.

Together with 26919931, 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 (26919229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13459964 + 13459965.

It is an arithmetic number, because the mean of its divisors is an integer number (13459965).

Almost surely, 2^26919929 is an apocalyptic number.

It is an amenable number.

26919929 is a deficient number, since it is larger than the sum of its proper divisors (1).

26919929 is an equidigital number, since it uses as much as digits as its factorization.

26919929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 47.

The square root of 26919929 is about 5188.4418663024. The cubic root of 26919929 is about 299.7031470988.

The spelling of 26919929 in words is "twenty-six million, nine hundred nineteen thousand, nine hundred twenty-nine".