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13279417 = 101313109
BaseRepresentation
bin110010101010…
…000010111001
3220222122221021
4302222002321
511344420132
61152342441
7220605334
oct62520271
926878837
1013279417
117550028
124544a21
13299c458
141a9961b
151274997
hexcaa0b9

13279417 has 4 divisors (see below), whose sum is σ = 13293540. Its totient is φ = 13265296.

The previous prime is 13279403. The next prime is 13279429. The reversal of 13279417 is 71497231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71497231 = 135499787.

It can be written as a sum of positive squares in 2 ways, for example, as 1610361 + 11669056 = 1269^2 + 3416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13279417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13279117) 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, 5542 + ... + 7567.

It is an arithmetic number, because the mean of its divisors is an integer number (3323385).

Almost surely, 213279417 is an apocalyptic number.

It is an amenable number.

13279417 is a deficient number, since it is larger than the sum of its proper divisors (14123).

13279417 is a wasteful number, since it uses less digits than its factorization.

13279417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14122.

The product of its digits is 10584, while the sum is 34.

The square root of 13279417 is about 3644.0934400753. The cubic root of 13279417 is about 236.8061640961.

The spelling of 13279417 in words is "thirteen million, two hundred seventy-nine thousand, four hundred seventeen".

Divisors: 1 1013 13109 13279417