20896459 has 2 divisors, whose sum is σ = 20896460. Its totient is φ = 20896458.

The previous prime is 20896457. The next prime is 20896471. The reversal of 20896459 is 95469802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20896459 - 2¹ = 20896457 is a prime.

Together with 20896457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20896457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10448229 + 10448230.

It is an arithmetic number, because the mean of its divisors is an integer number (10448230).

Almost surely, 2^20896459 is an apocalyptic number.

20896459 is a deficient number, since it is larger than the sum of its proper divisors (1).

20896459 is an equidigital number, since it uses as much as digits as its factorization.

20896459 is an evil number, because the sum of its binary digits is even.

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

The square root of 20896459 is about 4571.2644858945. The cubic root of 20896459 is about 275.4382389940.

The spelling of 20896459 in words is "twenty million, eight hundred ninety-six thousand, four hundred fifty-nine".