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3405538021 is a prime number
BaseRepresentation
bin1100101011111100…
…0110001011100101
322210100010020220211
43022333012023211
523433304204041
61321532255421
7150251411164
oct31277061345
98710106824
103405538021
111498379136
127b0611571
13423714772
1424440d3db
1514de9d481
hexcafc62e5

3405538021 has 2 divisors, whose sum is σ = 3405538022. Its totient is φ = 3405538020.

The previous prime is 3405538009. The next prime is 3405538049. The reversal of 3405538021 is 1208355043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2661012225 + 744525796 = 51585^2 + 27286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-3405538021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3405538421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1702769010 + 1702769011.

It is an arithmetic number, because the mean of its divisors is an integer number (1702769011).

Almost surely, 23405538021 is an apocalyptic number.

It is an amenable number.

3405538021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3405538021 is an equidigital number, since it uses as much as digits as its factorization.

3405538021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 3405538021 is about 58356.9877649626. The cubic root of 3405538021 is about 1504.5105741445.

The spelling of 3405538021 in words is "three billion, four hundred five million, five hundred thirty-eight thousand, twenty-one".