26945069 has 4 divisors (see below), whose sum is σ = 27082044. Its totient is φ = 26808096.

The previous prime is 26945063. The next prime is 26945071. The reversal of 26945069 is 96054962.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11812969 + 15132100 = 3437^2 + 3890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26945069 is a prime.

It is a super-2 number, since 2×26945069² = 1452073486829522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26945063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68192 + ... + 68585.

It is an arithmetic number, because the mean of its divisors is an integer number (6770511).

Almost surely, 2^26945069 is an apocalyptic number.

It is an amenable number.

26945069 is a deficient number, since it is larger than the sum of its proper divisors (136975).

26945069 is a wasteful number, since it uses less digits than its factorization.

26945069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136974.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 26945069 is about 5190.8639935949. The cubic root of 26945069 is about 299.7964137252.

The spelling of 26945069 in words is "twenty-six million, nine hundred forty-five thousand, sixty-nine".