21359093 has 8 divisors (see below), whose sum is σ = 25198080. Its totient is φ = 17717040.

The previous prime is 21359083. The next prime is 21359113. The reversal of 21359093 is 39095312.

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 21359093 - 2⁸ = 21358837 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 (21359083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48998 + ... + 49431.

It is an arithmetic number, because the mean of its divisors is an integer number (3149760).

Almost surely, 2^21359093 is an apocalyptic number.

It is an amenable number.

21359093 is a deficient number, since it is larger than the sum of its proper divisors (3838987).

21359093 is an equidigital number, since it uses as much as digits as its factorization.

21359093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98467.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 21359093 is about 4621.5898779533. The cubic root of 21359093 is about 277.4560945607.

The spelling of 21359093 in words is "twenty-one million, three hundred fifty-nine thousand, ninety-three".