26240749 has 2 divisors, whose sum is σ = 26240750. Its totient is φ = 26240748.

The previous prime is 26240701. The next prime is 26240759. The reversal of 26240749 is 94704262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13638249 + 12602500 = 3693^2 + 3550^2 .

It is a cyclic number.

It is not a de Polignac number, because 26240749 - 2²³ = 17852141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26240759) 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, 13120374 + 13120375.

It is an arithmetic number, because the mean of its divisors is an integer number (13120375).

Almost surely, 2^26240749 is an apocalyptic number.

It is an amenable number.

26240749 is a deficient number, since it is larger than the sum of its proper divisors (1).

26240749 is an equidigital number, since it uses as much as digits as its factorization.

26240749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 26240749 is about 5122.5724982669. The cubic root of 26240749 is about 297.1611810142.

The spelling of 26240749 in words is "twenty-six million, two hundred forty thousand, seven hundred forty-nine".