26393977 has 2 divisors, whose sum is σ = 26393978. Its totient is φ = 26393976.

The previous prime is 26393957. The next prime is 26393981. The reversal of 26393977 is 77939362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16032016 + 10361961 = 4004^2 + 3219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26393977 is a prime.

It is not a weakly prime, because it can be changed into another prime (26393957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13196988 + 13196989.

It is an arithmetic number, because the mean of its divisors is an integer number (13196989).

Almost surely, 2^26393977 is an apocalyptic number.

It is an amenable number.

26393977 is a deficient number, since it is larger than the sum of its proper divisors (1).

26393977 is an equidigital number, since it uses as much as digits as its factorization.

26393977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 46.

The square root of 26393977 is about 5137.5068856402. The cubic root of 26393977 is about 297.7384647376.

The spelling of 26393977 in words is "twenty-six million, three hundred ninety-three thousand, nine hundred seventy-seven".