20914339 has 2 divisors, whose sum is σ = 20914340. Its totient is φ = 20914338.

The previous prime is 20914321. The next prime is 20914343. The reversal of 20914339 is 93341902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20914339 - 2¹¹ = 20912291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20914339.

It is not a weakly prime, because it can be changed into another prime (20914319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10457169 + 10457170.

It is an arithmetic number, because the mean of its divisors is an integer number (10457170).

Almost surely, 2^20914339 is an apocalyptic number.

20914339 is a deficient number, since it is larger than the sum of its proper divisors (1).

20914339 is an equidigital number, since it uses as much as digits as its factorization.

20914339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 20914339 is about 4573.2197629241. The cubic root of 20914339 is about 275.5167759324.

The spelling of 20914339 in words is "twenty million, nine hundred fourteen thousand, three hundred thirty-nine".