26236139 has 2 divisors, whose sum is σ = 26236140. Its totient is φ = 26236138.

The previous prime is 26236129. The next prime is 26236141. The reversal of 26236139 is 93163262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26236139 - 2¹² = 26232043 is a prime.

Together with 26236141, 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 (26236109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13118069 + 13118070.

It is an arithmetic number, because the mean of its divisors is an integer number (13118070).

Almost surely, 2^26236139 is an apocalyptic number.

26236139 is a deficient number, since it is larger than the sum of its proper divisors (1).

26236139 is an equidigital number, since it uses as much as digits as its factorization.

26236139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 26236139 is about 5122.1225092729. The cubic root of 26236139 is about 297.1437781411.

The spelling of 26236139 in words is "twenty-six million, two hundred thirty-six thousand, one hundred thirty-nine".