26199947 has 2 divisors, whose sum is σ = 26199948. Its totient is φ = 26199946.

The previous prime is 26199937. The next prime is 26199949. The reversal of 26199947 is 74999162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26199947 - 2⁶ = 26199883 is a prime.

Together with 26199949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26199949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13099973 + 13099974.

It is an arithmetic number, because the mean of its divisors is an integer number (13099974).

Almost surely, 2^26199947 is an apocalyptic number.

26199947 is a deficient number, since it is larger than the sum of its proper divisors (1).

26199947 is an equidigital number, since it uses as much as digits as its factorization.

26199947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 47.

The square root of 26199947 is about 5118.5883796219. The cubic root of 26199947 is about 297.0070814970.

The spelling of 26199947 in words is "twenty-six million, one hundred ninety-nine thousand, nine hundred forty-seven".