26986829 has 2 divisors, whose sum is σ = 26986830. Its totient is φ = 26986828.

The previous prime is 26986823. The next prime is 26986831. The reversal of 26986829 is 92868962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25270729 + 1716100 = 5027^2 + 1310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26986829 is a prime.

Together with 26986831, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26986823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13493414 + 13493415.

It is an arithmetic number, because the mean of its divisors is an integer number (13493415).

Almost surely, 2^26986829 is an apocalyptic number.

It is an amenable number.

26986829 is a deficient number, since it is larger than the sum of its proper divisors (1).

26986829 is an equidigital number, since it uses as much as digits as its factorization.

26986829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 50.

The square root of 26986829 is about 5194.8848880413. The cubic root of 26986829 is about 299.9512105843.

The spelling of 26986829 in words is "twenty-six million, nine hundred eighty-six thousand, eight hundred twenty-nine".