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1389713 = 13532017
BaseRepresentation
bin101010011010010010001
32121121022212
411103102101
5323432323
645441505
714545433
oct5232221
92547285
101389713
1186a126
12570295
13398720
14282653
151c6b78
hex153491

1389713 has 8 divisors (see below), whose sum is σ = 1525608. Its totient is φ = 1257984.

The previous prime is 1389697. The next prime is 1389727. The reversal of 1389713 is 3179831.

1389713 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 322624 + 1067089 = 568^2 + 1033^2 .

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

It is not a de Polignac number, because 1389713 - 24 = 1389697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1389713.

It is not an unprimeable number, because it can be changed into a prime (1349713) 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, 320 + ... + 1697.

It is an arithmetic number, because the mean of its divisors is an integer number (190701).

21389713 is an apocalyptic number.

1389713 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1389713 is a deficient number, since it is larger than the sum of its proper divisors (135895).

1389713 is a wasteful number, since it uses less digits than its factorization.

1389713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083.

The product of its digits is 4536, while the sum is 32.

The square root of 1389713 is about 1178.8608908603. The cubic root of 1389713 is about 111.5942214691.

The spelling of 1389713 in words is "one million, three hundred eighty-nine thousand, seven hundred thirteen".

Divisors: 1 13 53 689 2017 26221 106901 1389713