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434108861 = 4187712073
BaseRepresentation
bin11001110111111…
…111100110111101
31010020212000101222
4121313333212331
51342112440421
6111024243125
713520602334
oct3167774675
91106760358
10434108861
1120305245a
121014704a5
136bc24864
1441922d1b
152819ecab
hex19dff9bd

434108861 has 8 divisors (see below), whose sum is σ = 445240824. Its totient is φ = 423002880.

The previous prime is 434108833. The next prime is 434108863. The reversal of 434108861 is 168801434.

It can be written as a sum of positive squares in 4 ways, for example, as 219961 + 433888900 = 469^2 + 20830^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 434108861 - 210 = 434107837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434108863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29921 + ... + 41993.

It is an arithmetic number, because the mean of its divisors is an integer number (55655103).

Almost surely, 2434108861 is an apocalyptic number.

434108861 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

434108861 is a deficient number, since it is larger than the sum of its proper divisors (11131963).

434108861 is a wasteful number, since it uses less digits than its factorization.

434108861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12991.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 434108861 is about 20835.2792397894. The cubic root of 434108861 is about 757.1807255687.

The spelling of 434108861 in words is "four hundred thirty-four million, one hundred eight thousand, eight hundred sixty-one".

Divisors: 1 41 877 12073 35957 494993 10588021 434108861