26450989 has 8 divisors (see below), whose sum is σ = 28189440. Its totient is φ = 24761616.

The previous prime is 26450981. The next prime is 26451023. The reversal of 26450989 is 98905462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26450989 - 2³ = 26450981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26450981) 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 in 7 ways as a sum of consecutive naturals, for example, 11154 + ... + 13315.

It is an arithmetic number, because the mean of its divisors is an integer number (3523680).

Almost surely, 2^26450989 is an apocalyptic number.

It is an amenable number.

26450989 is a deficient number, since it is larger than the sum of its proper divisors (1738451).

26450989 is a wasteful number, since it uses less digits than its factorization.

26450989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24539.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 26450989 is about 5143.0524982738. The cubic root of 26450989 is about 297.9526860606.

The spelling of 26450989 in words is "twenty-six million, four hundred fifty thousand, nine hundred eighty-nine".