26139629 has 2 divisors, whose sum is σ = 26139630. Its totient is φ = 26139628.

The previous prime is 26139613. The next prime is 26139667. The reversal of 26139629 is 92693162.

It is an a-pointer prime, because the next prime (26139667) can be obtained adding 26139629 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13875625 + 12264004 = 3725^2 + 3502^2 .

It is a cyclic number.

It is not a de Polignac number, because 26139629 - 2⁴ = 26139613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26139592 and 26139601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26139679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13069814 + 13069815.

It is an arithmetic number, because the mean of its divisors is an integer number (13069815).

Almost surely, 2^26139629 is an apocalyptic number.

It is an amenable number.

26139629 is a deficient number, since it is larger than the sum of its proper divisors (1).

26139629 is an equidigital number, since it uses as much as digits as its factorization.

26139629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 38.

The square root of 26139629 is about 5112.6929303450. The cubic root of 26139629 is about 296.7789813062.

The spelling of 26139629 in words is "twenty-six million, one hundred thirty-nine thousand, six hundred twenty-nine".