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139187483 = 1719430921
BaseRepresentation
bin10000100101111…
…01010100011011
3100200220110022222
420102331110123
5241112444413
621451134255
73310034261
oct1022752433
9320813288
10139187483
1171627686
123a74438b
1322ab4576
14146b2431
15c345b08
hex84bd51b

139187483 has 8 divisors (see below), whose sum is σ = 155131920. Its totient is φ = 124104960.

The previous prime is 139187473. The next prime is 139187507. The reversal of 139187483 is 384781931.

139187483 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139187483 - 214 = 139171099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139187473) 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, 215138 + ... + 215783.

It is an arithmetic number, because the mean of its divisors is an integer number (19391490).

Almost surely, 2139187483 is an apocalyptic number.

139187483 is a deficient number, since it is larger than the sum of its proper divisors (15944437).

139187483 is a wasteful number, since it uses less digits than its factorization.

139187483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430957.

The product of its digits is 145152, while the sum is 44.

The square root of 139187483 is about 11797.7744935221. The cubic root of 139187483 is about 518.2429392195.

The spelling of 139187483 in words is "one hundred thirty-nine million, one hundred eighty-seven thousand, four hundred eighty-three".

Divisors: 1 17 19 323 430921 7325657 8187499 139187483