26131439 has 2 divisors, whose sum is σ = 26131440. Its totient is φ = 26131438.

The previous prime is 26131429. The next prime is 26131451. The reversal of 26131439 is 93413162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26131439 - 2⁴ = 26131423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26131429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13065719 + 13065720.

It is an arithmetic number, because the mean of its divisors is an integer number (13065720).

Almost surely, 2^26131439 is an apocalyptic number.

26131439 is a deficient number, since it is larger than the sum of its proper divisors (1).

26131439 is an equidigital number, since it uses as much as digits as its factorization.

26131439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 26131439 is about 5111.8919198277. The cubic root of 26131439 is about 296.7479827311.

The spelling of 26131439 in words is "twenty-six million, one hundred thirty-one thousand, four hundred thirty-nine".