20948359 has 2 divisors, whose sum is σ = 20948360. Its totient is φ = 20948358.

The previous prime is 20948339. The next prime is 20948371. The reversal of 20948359 is 95384902.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20948359 - 2⁷ = 20948231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20948339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10474179 + 10474180.

It is an arithmetic number, because the mean of its divisors is an integer number (10474180).

Almost surely, 2^20948359 is an apocalyptic number.

20948359 is a deficient number, since it is larger than the sum of its proper divisors (1).

20948359 is an equidigital number, since it uses as much as digits as its factorization.

20948359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 20948359 is about 4576.9377317154. The cubic root of 20948359 is about 275.6660834340. Note that the first 3 decimals are identical.

The spelling of 20948359 in words is "twenty million, nine hundred forty-eight thousand, three hundred fifty-nine".