26429069 has 2 divisors, whose sum is σ = 26429070. Its totient is φ = 26429068.

The previous prime is 26429059. The next prime is 26429089. The reversal of 26429069 is 96092462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26112100 + 316969 = 5110^2 + 563^2 .

It is a cyclic number.

It is not a de Polignac number, because 26429069 - 2¹² = 26424973 is a prime.

It is a super-4 number, since 4×26429069⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26429009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13214534 + 13214535.

It is an arithmetic number, because the mean of its divisors is an integer number (13214535).

Almost surely, 2^26429069 is an apocalyptic number.

It is an amenable number.

26429069 is a deficient number, since it is larger than the sum of its proper divisors (1).

26429069 is an equidigital number, since it uses as much as digits as its factorization.

26429069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 26429069 is about 5140.9210264310. The cubic root of 26429069 is about 297.8703586055.

It can be divided in two parts, 2642 and 9069, that added together give a palindrome (11711).

The spelling of 26429069 in words is "twenty-six million, four hundred twenty-nine thousand, sixty-nine".