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9247404213 = 321027489357
BaseRepresentation
bin10001001110011000…
…00011000010110101
3212212110121210210100
420213030003002311
5122414313413323
64125335544313
7445105432065
oct104714030265
925773553710
109247404213
113a15a11723
121960b2b099
13b44ac4318
1463a2173a5
15391c9b943
hex2273030b5

9247404213 has 6 divisors (see below), whose sum is σ = 13357361654. Its totient is φ = 6164936136.

The previous prime is 9247404193. The next prime is 9247404217. The reversal of 9247404213 is 3124047429.

9247404213 is a `hidden beast` number, since 9 + 247 + 404 + 2 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6339822129 + 2907582084 = 79623^2 + 53922^2 .

It is not a de Polignac number, because 9247404213 - 213 = 9247396021 is a prime.

It is a super-2 number, since 2×92474042132 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9247404217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 513744670 + ... + 513744687.

Almost surely, 29247404213 is an apocalyptic number.

It is an amenable number.

9247404213 is a deficient number, since it is larger than the sum of its proper divisors (4109957441).

9247404213 is a wasteful number, since it uses less digits than its factorization.

9247404213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027489363 (or 1027489360 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 9247404213 is about 96163.4245074498. The cubic root of 9247404213 is about 2098.9718484039.

The spelling of 9247404213 in words is "nine billion, two hundred forty-seven million, four hundred four thousand, two hundred thirteen".

Divisors: 1 3 9 1027489357 3082468071 9247404213