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13439007 = 33497741
BaseRepresentation
bin110011010001…
…000000011111
3221021202212000
4303101000133
511420022012
61200013343
7222141531
oct63210037
927252760
1013439007
117649a1a
124601253
132a26c9a
141adb851
1512a6ddc
hexcd101f

13439007 has 8 divisors (see below), whose sum is σ = 19909680. Its totient is φ = 8959320.

The previous prime is 13439003. The next prime is 13439009. The reversal of 13439007 is 70093431.

It is not a de Polignac number, because 13439007 - 22 = 13439003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 497741 = 13439007 / (1 + 3 + 4 + 3 + 9 + 0 + 0 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13439003) 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 7 ways as a sum of consecutive naturals, for example, 248844 + ... + 248897.

It is an arithmetic number, because the mean of its divisors is an integer number (2488710).

Almost surely, 213439007 is an apocalyptic number.

13439007 is a deficient number, since it is larger than the sum of its proper divisors (6470673).

13439007 is an equidigital number, since it uses as much as digits as its factorization.

13439007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497750 (or 497744 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 13439007 is about 3665.9251219849. The cubic root of 13439007 is about 237.7510224956.

The spelling of 13439007 in words is "thirteen million, four hundred thirty-nine thousand, seven".

Divisors: 1 3 9 27 497741 1493223 4479669 13439007