26640941 has 2 divisors, whose sum is σ = 26640942. Its totient is φ = 26640940.

The previous prime is 26640899. The next prime is 26640959. The reversal of 26640941 is 14904662.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14600041 + 12040900 = 3821^2 + 3470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26640941 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26640898 and 26640907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26640041) 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, 13320470 + 13320471.

It is an arithmetic number, because the mean of its divisors is an integer number (13320471).

Almost surely, 2^26640941 is an apocalyptic number.

It is an amenable number.

26640941 is a deficient number, since it is larger than the sum of its proper divisors (1).

26640941 is an equidigital number, since it uses as much as digits as its factorization.

26640941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 26640941 is about 5161.4863169440. The cubic root of 26640941 is about 298.6642129225.

The spelling of 26640941 in words is "twenty-six million, six hundred forty thousand, nine hundred forty-one".