26404999 has 2 divisors, whose sum is σ = 26405000. Its totient is φ = 26404998.

The previous prime is 26404997. The next prime is 26405011. The reversal of 26404999 is 99940462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26404999 - 2¹ = 26404997 is a prime.

Together with 26404997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26404997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13202499 + 13202500.

It is an arithmetic number, because the mean of its divisors is an integer number (13202500).

Almost surely, 2^26404999 is an apocalyptic number.

26404999 is a deficient number, since it is larger than the sum of its proper divisors (1).

26404999 is an equidigital number, since it uses as much as digits as its factorization.

26404999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 26404999 is about 5138.5794729672. The cubic root of 26404999 is about 297.7799036949.

The spelling of 26404999 in words is "twenty-six million, four hundred four thousand, nine hundred ninety-nine".