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86409813 = 374114753
BaseRepresentation
bin1010010011010…
…00001001010101
320000121001222110
411021220021111
5134110103223
612324021233
72066320440
oct511501125
9200531873
1086409813
1144859a76
1224b31819
1314b95a89
14b694657
1578bcd93
hex5268255

86409813 has 8 divisors (see below), whose sum is σ = 131672128. Its totient is φ = 49377024.

The previous prime is 86409797. The next prime is 86409823. The reversal of 86409813 is 31890468.

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

It is not a de Polignac number, because 86409813 - 24 = 86409797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86409823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2057356 + ... + 2057397.

It is an arithmetic number, because the mean of its divisors is an integer number (16459016).

Almost surely, 286409813 is an apocalyptic number.

It is an amenable number.

86409813 is a deficient number, since it is larger than the sum of its proper divisors (45262315).

86409813 is a wasteful number, since it uses less digits than its factorization.

86409813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114763.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 86409813 is about 9295.6878712659. The cubic root of 86409813 is about 442.1005159630.

The spelling of 86409813 in words is "eighty-six million, four hundred nine thousand, eight hundred thirteen".

Divisors: 1 3 7 21 4114753 12344259 28803271 86409813