26921489 has 8 divisors (see below), whose sum is σ = 32577408. Its totient is φ = 21718080.

The previous prime is 26921473. The next prime is 26921497. The reversal of 26921489 is 98412962.

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

It is a cyclic number.

It is not a de Polignac number, because 26921489 - 2⁴ = 26921473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26921989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112997 + ... + 113234.

It is an arithmetic number, because the mean of its divisors is an integer number (4072176).

Almost surely, 2^26921489 is an apocalyptic number.

It is an amenable number.

26921489 is a deficient number, since it is larger than the sum of its proper divisors (5655919).

26921489 is a wasteful number, since it uses less digits than its factorization.

26921489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226255.

The product of its digits is 62208, while the sum is 41.

The square root of 26921489 is about 5188.5921982750. The cubic root of 26921489 is about 299.7089362161.

The spelling of 26921489 in words is "twenty-six million, nine hundred twenty-one thousand, four hundred eighty-nine".