20839201 has 2 divisors, whose sum is σ = 20839202. Its totient is φ = 20839200.

The previous prime is 20839187. The next prime is 20839243. The reversal of 20839201 is 10293802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11229201 + 9610000 = 3351^2 + 3100^2 .

It is a cyclic number.

It is not a de Polignac number, because 20839201 - 2⁹ = 20838689 is a prime.

It is not a weakly prime, because it can be changed into another prime (20839801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10419600 + 10419601.

It is an arithmetic number, because the mean of its divisors is an integer number (10419601).

Almost surely, 2^20839201 is an apocalyptic number.

It is an amenable number.

20839201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20839201 is an equidigital number, since it uses as much as digits as its factorization.

20839201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 20839201 is about 4564.9973713026. The cubic root of 20839201 is about 275.1864344610.

The spelling of 20839201 in words is "twenty million, eight hundred thirty-nine thousand, two hundred one".