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144679963 = 663721799
BaseRepresentation
bin10001001111110…
…10010000011011
3101002020111121011
420213322100123
5244014224323
622204554351
73404521321
oct1047722033
9332214534
10144679963
117473921a
12405529b7
1323c8855c
1415301d11
15ca7d20d
hex89fa41b

144679963 has 4 divisors (see below), whose sum is σ = 144708400. Its totient is φ = 144651528.

The previous prime is 144679961. The next prime is 144679987. The reversal of 144679963 is 369976441.

144679963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 369976441 = 1971878053.

It is a cyclic number.

It is not a de Polignac number, because 144679963 - 21 = 144679961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144679961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4263 + ... + 17536.

It is an arithmetic number, because the mean of its divisors is an integer number (36177100).

Almost surely, 2144679963 is an apocalyptic number.

144679963 is a deficient number, since it is larger than the sum of its proper divisors (28437).

144679963 is an equidigital number, since it uses as much as digits as its factorization.

144679963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28436.

The product of its digits is 979776, while the sum is 49.

The square root of 144679963 is about 12028.2984249644. The cubic root of 144679963 is about 524.9719870163.

The spelling of 144679963 in words is "one hundred forty-four million, six hundred seventy-nine thousand, nine hundred sixty-three".

Divisors: 1 6637 21799 144679963