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489706039 = 3115796969
BaseRepresentation
bin11101001100000…
…101001000110111
31021010110122101201
4131030011020313
52000331043124
6120332033331
715064301254
oct3514051067
91233418351
10489706039
11231476439
12118002847
137a5bc7b4
144907642b
152ced3144
hex1d305237

489706039 has 4 divisors (see below), whose sum is σ = 505503040. Its totient is φ = 473909040.

The previous prime is 489706037. The next prime is 489706067. The reversal of 489706039 is 930607984.

489706039 = T18067 + T18068 + T18069.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 489706039 - 21 = 489706037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 489706039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489706033) 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, 7898454 + ... + 7898515.

It is an arithmetic number, because the mean of its divisors is an integer number (126375760).

Almost surely, 2489706039 is an apocalyptic number.

489706039 is the 18069-th centered triangular number.

489706039 is a deficient number, since it is larger than the sum of its proper divisors (15797001).

489706039 is a wasteful number, since it uses less digits than its factorization.

489706039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15797000.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 489706039 is about 22129.3027228605. The cubic root of 489706039 is about 788.2158309862.

The spelling of 489706039 in words is "four hundred eighty-nine million, seven hundred six thousand, thirty-nine".

Divisors: 1 31 15796969 489706039