26679949 has 2 divisors, whose sum is σ = 26679950. Its totient is φ = 26679948.

The previous prime is 26679929. The next prime is 26679979. The reversal of 26679949 is 94997662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16662724 + 10017225 = 4082^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 26679949 - 2¹¹ = 26677901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26679896 and 26679905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26679929) 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 as a sum of consecutive naturals, namely, 13339974 + 13339975.

It is an arithmetic number, because the mean of its divisors is an integer number (13339975).

Almost surely, 2^26679949 is an apocalyptic number.

It is an amenable number.

26679949 is a deficient number, since it is larger than the sum of its proper divisors (1).

26679949 is an equidigital number, since it uses as much as digits as its factorization.

26679949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 26679949 is about 5165.2636912359. The cubic root of 26679949 is about 298.8099111303.

The spelling of 26679949 in words is "twenty-six million, six hundred seventy-nine thousand, nine hundred forty-nine".