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487993439 = 4170116979
BaseRepresentation
bin11101000101100…
…011000001011111
31021000020122011002
4131011203001133
51444411242224
6120231220515
715043606253
oct3505430137
91230218132
10487993439
1123050676a
1211751773b
137a14011b
1448b4c263
152cc959ae
hex1d16305f

487993439 has 8 divisors (see below), whose sum is σ = 500638320. Its totient is φ = 475384000.

The previous prime is 487993427. The next prime is 487993459. The reversal of 487993439 is 934399784.

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 487993439 - 24 = 487993423 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 (487993409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20252 + ... + 37230.

It is an arithmetic number, because the mean of its divisors is an integer number (62579790).

Almost surely, 2487993439 is an apocalyptic number.

487993439 is a deficient number, since it is larger than the sum of its proper divisors (12644881).

487993439 is a wasteful number, since it uses less digits than its factorization.

487993439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17721.

The product of its digits is 5878656, while the sum is 56.

The square root of 487993439 is about 22090.5735326179. The cubic root of 487993439 is about 787.2959082770.

The spelling of 487993439 in words is "four hundred eighty-seven million, nine hundred ninety-three thousand, four hundred thirty-nine".

Divisors: 1 41 701 16979 28741 696139 11902279 487993439