26091907 has 2 divisors, whose sum is σ = 26091908. Its totient is φ = 26091906.

The previous prime is 26091893. The next prime is 26091917. The reversal of 26091907 is 70919062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26091907 - 2²³ = 17703299 is a prime.

It is a super-2 number, since 2×26091907² = 1361575221793298, which contains 22 as substring.

It is equal to p_1629907 and since 26091907 and 1629907 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (26091917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13045953 + 13045954.

It is an arithmetic number, because the mean of its divisors is an integer number (13045954).

Almost surely, 2^26091907 is an apocalyptic number.

26091907 is a deficient number, since it is larger than the sum of its proper divisors (1).

26091907 is an equidigital number, since it uses as much as digits as its factorization.

26091907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 26091907 is about 5108.0237861623. The cubic root of 26091907 is about 296.5982657324.

The spelling of 26091907 in words is "twenty-six million, ninety-one thousand, nine hundred seven".