26540939 has 2 divisors, whose sum is σ = 26540940. Its totient is φ = 26540938.

The previous prime is 26540879. The next prime is 26540959. The reversal of 26540939 is 93904562.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26540939 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26540959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13270469 + 13270470.

It is an arithmetic number, because the mean of its divisors is an integer number (13270470).

Almost surely, 2^26540939 is an apocalyptic number.

26540939 is a deficient number, since it is larger than the sum of its proper divisors (1).

26540939 is an equidigital number, since it uses as much as digits as its factorization.

26540939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 26540939 is about 5151.7898831377. The cubic root of 26540939 is about 298.2900461176.

The spelling of 26540939 in words is "twenty-six million, five hundred forty thousand, nine hundred thirty-nine".