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289166379 = 3175669929
BaseRepresentation
bin10001001111000…
…101010000101011
3202011010011200220
4101033011100223
51043011311004
644405501123
710110605445
oct2117052053
9664104626
10289166379
11139254a87
1280a117a3
1347ba6988
142a593495
151a5bddd9
hex113c542b

289166379 has 8 divisors (see below), whose sum is σ = 408234960. Its totient is φ = 181437696.

The previous prime is 289166351. The next prime is 289166411. The reversal of 289166379 is 973661982.

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

It is not a de Polignac number, because 289166379 - 25 = 289166347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 5669929 = 289166379 / (2 + 8 + 9 + 1 + 6 + 6 + 3 + 7 + 9).

It is not an unprimeable number, because it can be changed into a prime (289166329) 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 7 ways as a sum of consecutive naturals, for example, 2834914 + ... + 2835015.

It is an arithmetic number, because the mean of its divisors is an integer number (51029370).

Almost surely, 2289166379 is an apocalyptic number.

289166379 is a deficient number, since it is larger than the sum of its proper divisors (119068581).

289166379 is a wasteful number, since it uses less digits than its factorization.

289166379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5669949.

The product of its digits is 979776, while the sum is 51.

The square root of 289166379 is about 17004.8927958985. The cubic root of 289166379 is about 661.2757532765.

The spelling of 289166379 in words is "two hundred eighty-nine million, one hundred sixty-six thousand, three hundred seventy-nine".

Divisors: 1 3 17 51 5669929 17009787 96388793 289166379