26039987 has 2 divisors, whose sum is σ = 26039988. Its totient is φ = 26039986.

The previous prime is 26039963. The next prime is 26040017. The reversal of 26039987 is 78993062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26039987 - 2⁸ = 26039731 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26039917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13019993 + 13019994.

It is an arithmetic number, because the mean of its divisors is an integer number (13019994).

Almost surely, 2^26039987 is an apocalyptic number.

26039987 is a deficient number, since it is larger than the sum of its proper divisors (1).

26039987 is an equidigital number, since it uses as much as digits as its factorization.

26039987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 26039987 is about 5102.9390550936. The cubic root of 26039987 is about 296.4014025490.

The spelling of 26039987 in words is "twenty-six million, thirty-nine thousand, nine hundred eighty-seven".