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86297149 = 312783779
BaseRepresentation
bin1010010010011…
…00101000111101
320000101100102201
411021030220331
5134043002044
612321351501
72065341121
oct511145075
9200340381
1086297149
1144792364
1224a98591
1314b56703
14b665581
1578997d4
hex524ca3d

86297149 has 4 divisors (see below), whose sum is σ = 89080960. Its totient is φ = 83513340.

The previous prime is 86297147. The next prime is 86297161. The reversal of 86297149 is 94179268.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86297149 - 21 = 86297147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86297099 and 86297108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86297143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391859 + ... + 1391920.

It is an arithmetic number, because the mean of its divisors is an integer number (22270240).

Almost surely, 286297149 is an apocalyptic number.

It is an amenable number.

86297149 is a deficient number, since it is larger than the sum of its proper divisors (2783811).

86297149 is a wasteful number, since it uses less digits than its factorization.

86297149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783810.

The product of its digits is 217728, while the sum is 46.

The square root of 86297149 is about 9289.6258805185. The cubic root of 86297149 is about 441.9082905897.

The spelling of 86297149 in words is "eighty-six million, two hundred ninety-seven thousand, one hundred forty-nine".

Divisors: 1 31 2783779 86297149