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20959459 is a prime number
BaseRepresentation
bin100111111110…
…1000011100011
31110102211222021
41033331003203
520331200314
62025122311
7343103203
oct117750343
943384867
1020959459
1110916174
127029397
13445b061
142ad8403
151c90324
hex13fd0e3

20959459 has 2 divisors, whose sum is σ = 20959460. Its totient is φ = 20959458.

The previous prime is 20959429. The next prime is 20959483. The reversal of 20959459 is 95495902.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20959459 - 27 = 20959331 is a prime.

It is not a weakly prime, because it can be changed into another prime (20959429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10479729 + 10479730.

It is an arithmetic number, because the mean of its divisors is an integer number (10479730).

Almost surely, 220959459 is an apocalyptic number.

20959459 is a deficient number, since it is larger than the sum of its proper divisors (1).

20959459 is an equidigital number, since it uses as much as digits as its factorization.

20959459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 20959459 is about 4578.1501722857. The cubic root of 20959459 is about 275.7147643073.

The spelling of 20959459 in words is "twenty million, nine hundred fifty-nine thousand, four hundred fifty-nine".