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139499 = 199701
BaseRepresentation
bin100010000011101011
321002100122
4202003223
513430444
62553455
71120463
oct420353
9232318
10139499
1195898
126888b
134b659
1438ba3
152b4ee
hex220eb

139499 has 4 divisors (see below), whose sum is σ = 140400. Its totient is φ = 138600.

The previous prime is 139493. The next prime is 139501. The reversal of 139499 is 994931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 139499 - 24 = 139483 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139499.

It is not an unprimeable number, because it can be changed into a prime (139493) 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, 152 + ... + 549.

It is an arithmetic number, because the mean of its divisors is an integer number (35100).

2139499 is an apocalyptic number.

139499 is a deficient number, since it is larger than the sum of its proper divisors (901).

139499 is an equidigital number, since it uses as much as digits as its factorization.

139499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900.

The product of its digits is 8748, while the sum is 35.

The square root of 139499 is about 373.4956492384. The cubic root of 139499 is about 51.8629279501.

The spelling of 139499 in words is "one hundred thirty-nine thousand, four hundred ninety-nine".

Divisors: 1 199 701 139499