26031139 has 2 divisors, whose sum is σ = 26031140. Its totient is φ = 26031138.

The previous prime is 26031119. The next prime is 26031149. The reversal of 26031139 is 93113062.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26031139 is a prime.

It is not a weakly prime, because it can be changed into another prime (26031119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13015569 + 13015570.

It is an arithmetic number, because the mean of its divisors is an integer number (13015570).

Almost surely, 2^26031139 is an apocalyptic number.

26031139 is a deficient number, since it is larger than the sum of its proper divisors (1).

26031139 is an equidigital number, since it uses as much as digits as its factorization.

26031139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 26031139 is about 5102.0720300678. The cubic root of 26031139 is about 296.3678278177.

The spelling of 26031139 in words is "twenty-six million, thirty-one thousand, one hundred thirty-nine".