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144806479 = 469130869
BaseRepresentation
bin10001010000110…
…01001001001111
3101002110221010221
420220121021033
5244032301404
622211412211
73405556216
oct1050311117
9332427127
10144806479
1174815284
12405b4067
132400100c
141533607d
15caa5954
hex8a1924f

144806479 has 4 divisors (see below), whose sum is σ = 144842040. Its totient is φ = 144770920.

The previous prime is 144806437. The next prime is 144806489. The reversal of 144806479 is 974608441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974608441 = 9127106783.

It is a cyclic number.

It is not a de Polignac number, because 144806479 - 27 = 144806351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144806489) 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, 10744 + ... + 20125.

It is an arithmetic number, because the mean of its divisors is an integer number (36210510).

Almost surely, 2144806479 is an apocalyptic number.

144806479 is a deficient number, since it is larger than the sum of its proper divisors (35561).

144806479 is an equidigital number, since it uses as much as digits as its factorization.

144806479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35560.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 144806479 is about 12033.5563737409. The cubic root of 144806479 is about 525.1249637526.

The spelling of 144806479 in words is "one hundred forty-four million, eight hundred six thousand, four hundred seventy-nine".

Divisors: 1 4691 30869 144806479