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997000999 is a prime number
BaseRepresentation
bin111011011011010…
…000011100100111
32120111000220020221
4323123100130213
54020213012444
6242533105211
733464240311
oct7333203447
92514026227
10997000999
11471865675
12239a88207
1312b72a127
14965aa7b1
155c7dca84
hex3b6d0727

997000999 has 2 divisors, whose sum is σ = 997001000. Its totient is φ = 997000998.

The previous prime is 997000993. The next prime is 997001009. The reversal of 997000999 is 999000799.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-997000999 is a prime.

997000999 is a modest number, since divided by 999 gives 997 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997000993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498500499 + 498500500.

It is an arithmetic number, because the mean of its divisors is an integer number (498500500).

Almost surely, 2997000999 is an apocalyptic number.

997000999 is a deficient number, since it is larger than the sum of its proper divisors (1).

997000999 is an equidigital number, since it uses as much as digits as its factorization.

997000999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 413343, while the sum is 52.

The square root of 997000999 is about 31575.3226270136. The cubic root of 997000999 is about 998.9993319976. Note that the first 3 decimals are identical.

The spelling of 997000999 in words is "nine hundred ninety-seven million, nine hundred ninety-nine", and thus it is an aban number.