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8238669109 = 1141229241331
BaseRepresentation
bin1111010110001000…
…00001110100110101
3210021011111202100221
413223010001310311
5113333044402414
63441303134341
7411106350316
oct75304016465
923234452327
108238669109
113548572050
12171b1443b1
13a13b19248
1458227460d
15333442224
hex1eb101d35

8238669109 has 32 divisors (see below), whose sum is σ = 9313476480. Its totient is φ = 7223040000.

The previous prime is 8238669107. The next prime is 8238669119. The reversal of 8238669109 is 9019668328.

It is a happy number.

It is not a de Polignac number, because 8238669109 - 21 = 8238669107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8238669107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24890074 + ... + 24890404.

It is an arithmetic number, because the mean of its divisors is an integer number (291046140).

Almost surely, 28238669109 is an apocalyptic number.

It is an amenable number.

8238669109 is a deficient number, since it is larger than the sum of its proper divisors (1074807371).

8238669109 is a wasteful number, since it uses less digits than its factorization.

8238669109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 8238669109 is about 90767.1146891869. The cubic root of 8238669109 is about 2019.6945187985.

The spelling of 8238669109 in words is "eight billion, two hundred thirty-eight million, six hundred sixty-nine thousand, one hundred nine".

Divisors: 1 11 41 229 241 331 451 2519 2651 3641 9389 9881 13571 55189 75799 79771 103279 108691 149281 607079 833789 877481 2262749 3107759 3270611 18267559 24890239 34185349 35976721 200943149 748969919 8238669109