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489939971 is a prime number
BaseRepresentation
bin11101001100111…
…110010000000011
31021010220112021212
4131030332100003
52000411034341
6120341040335
715066264263
oct3514762003
91233815255
10489939971
11231616174
121180b60ab
137a672111
14490d77a3
152d02c5eb
hex1d33e403

489939971 has 2 divisors, whose sum is σ = 489939972. Its totient is φ = 489939970.

The previous prime is 489939959. The next prime is 489940001. The reversal of 489939971 is 179939984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489939971 - 26 = 489939907 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489939971.

It is not a weakly prime, because it can be changed into another prime (489939941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244969985 + 244969986.

It is an arithmetic number, because the mean of its divisors is an integer number (244969986).

Almost surely, 2489939971 is an apocalyptic number.

489939971 is a deficient number, since it is larger than the sum of its proper divisors (1).

489939971 is an equidigital number, since it uses as much as digits as its factorization.

489939971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 59.

The square root of 489939971 is about 22134.5876627508. The cubic root of 489939971 is about 788.3413209319.

The spelling of 489939971 in words is "four hundred eighty-nine million, nine hundred thirty-nine thousand, nine hundred seventy-one".