26869247 has 2 divisors, whose sum is σ = 26869248. Its totient is φ = 26869246.

The previous prime is 26869229. The next prime is 26869259. The reversal of 26869247 is 74296862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26869247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26869198 and 26869207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26869207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13434623 + 13434624.

It is an arithmetic number, because the mean of its divisors is an integer number (13434624).

Almost surely, 2^26869247 is an apocalyptic number.

26869247 is a deficient number, since it is larger than the sum of its proper divisors (1).

26869247 is an equidigital number, since it uses as much as digits as its factorization.

26869247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 26869247 is about 5183.5554400431. Note that the first 3 decimals coincide. The cubic root of 26869247 is about 299.5149457937.

The spelling of 26869247 in words is "twenty-six million, eight hundred sixty-nine thousand, two hundred forty-seven".