26120389 has 2 divisors, whose sum is σ = 26120390. Its totient is φ = 26120388.

The previous prime is 26120377. The next prime is 26120399. The reversal of 26120389 is 98302162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16769025 + 9351364 = 4095^2 + 3058^2 .

It is a cyclic number.

It is not a de Polignac number, because 26120389 - 2⁵ = 26120357 is a prime.

It is a super-2 number, since 2×26120389² = 1364549443022642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26120389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26120309) 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, 13060194 + 13060195.

It is an arithmetic number, because the mean of its divisors is an integer number (13060195).

Almost surely, 2^26120389 is an apocalyptic number.

It is an amenable number.

26120389 is a deficient number, since it is larger than the sum of its proper divisors (1).

26120389 is an equidigital number, since it uses as much as digits as its factorization.

26120389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 26120389 is about 5110.8109923964. The cubic root of 26120389 is about 296.7061489906.

The spelling of 26120389 in words is "twenty-six million, one hundred twenty thousand, three hundred eighty-nine".