26494991 has 2 divisors, whose sum is σ = 26494992. Its totient is φ = 26494990.

The previous prime is 26494973. The next prime is 26495003. The reversal of 26494991 is 19949462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26494991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26494921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13247495 + 13247496.

It is an arithmetic number, because the mean of its divisors is an integer number (13247496).

Almost surely, 2^26494991 is an apocalyptic number.

26494991 is a deficient number, since it is larger than the sum of its proper divisors (1).

26494991 is an equidigital number, since it uses as much as digits as its factorization.

26494991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 26494991 is about 5147.3285304126. The cubic root of 26494991 is about 298.1178122228.

The spelling of 26494991 in words is "twenty-six million, four hundred ninety-four thousand, nine hundred ninety-one".