26396987 has 4 divisors (see below), whose sum is σ = 26472120. Its totient is φ = 26321856.

The previous prime is 26396983. The next prime is 26396999. The reversal of 26396987 is 78969362.

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

It is a cyclic number.

It is not a de Polignac number, because 26396987 - 2² = 26396983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26396983) 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, 37037 + ... + 37742.

It is an arithmetic number, because the mean of its divisors is an integer number (6618030).

Almost surely, 2^26396987 is an apocalyptic number.

26396987 is a deficient number, since it is larger than the sum of its proper divisors (75133).

26396987 is an equidigital number, since it uses as much as digits as its factorization.

26396987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75132.

The product of its digits is 979776, while the sum is 50.

The square root of 26396987 is about 5137.7998209350. The cubic root of 26396987 is about 297.7497824549.

The spelling of 26396987 in words is "twenty-six million, three hundred ninety-six thousand, nine hundred eighty-seven".