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144249879 = 3172828429
BaseRepresentation
bin10001001100100…
…01010000010111
3101001102122122010
420212101100113
5243411444004
622151435303
73401050404
oct1046212027
9331378563
10144249879
1174475084
1240385b33
1323b67877
141522d2ab
15c9e5a89
hex8991417

144249879 has 8 divisors (see below), whose sum is σ = 203646960. Its totient is φ = 90509696.

The previous prime is 144249877. The next prime is 144249883. The reversal of 144249879 is 978942441.

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 144249879 - 21 = 144249877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144249877) 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, 1414164 + ... + 1414265.

It is an arithmetic number, because the mean of its divisors is an integer number (25455870).

Almost surely, 2144249879 is an apocalyptic number.

144249879 is a deficient number, since it is larger than the sum of its proper divisors (59397081).

144249879 is a wasteful number, since it uses less digits than its factorization.

144249879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828449.

The product of its digits is 580608, while the sum is 48.

The square root of 144249879 is about 12010.4071121673. The cubic root of 144249879 is about 524.4512833845.

The spelling of 144249879 in words is "one hundred forty-four million, two hundred forty-nine thousand, eight hundred seventy-nine".

Divisors: 1 3 17 51 2828429 8485287 48083293 144249879