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538065479 = 776866497
BaseRepresentation
bin100000000100100…
…011101001000111
31101111110120002002
4200010203221013
52100221043404
6125220335515
716222324010
oct4004435107
91344416062
10538065479
112567a6616
1213024459b
1387622253
1451664007
1532386c1e
hex20123a47

538065479 has 4 divisors (see below), whose sum is σ = 614931984. Its totient is φ = 461198976.

The previous prime is 538065461. The next prime is 538065547. The reversal of 538065479 is 974560835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974560835 = 5194912167.

It is not a de Polignac number, because 538065479 - 212 = 538061383 is a prime.

It is a super-3 number, since 3×5380654793 (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538065379) 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 3 ways as a sum of consecutive naturals, for example, 38433242 + ... + 38433255.

It is an arithmetic number, because the mean of its divisors is an integer number (153732996).

Almost surely, 2538065479 is an apocalyptic number.

538065479 is a deficient number, since it is larger than the sum of its proper divisors (76866505).

538065479 is an equidigital number, since it uses as much as digits as its factorization.

538065479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76866504.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 538065479 is about 23196.2384666135. The cubic root of 538065479 is about 813.3516959074.

The spelling of 538065479 in words is "five hundred thirty-eight million, sixty-five thousand, four hundred seventy-nine".

Divisors: 1 7 76866497 538065479