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3979717 = 71753631
BaseRepresentation
bin1111001011100111000101
321111012010221
433023213011
52004322332
6221144341
745553450
oct17134705
97435127
103979717
112279025
1213bb0b1
13a94581
14758497
15539297
hex3cb9c5

3979717 has 16 divisors (see below), whose sum is σ = 4914432. Its totient is φ = 3144960.

The previous prime is 3979711. The next prime is 3979739. The reversal of 3979717 is 7179793.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-3979717 is a prime.

It is a super-3 number, since 3×39797173 (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

3979717 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5992 + ... + 6622.

It is an arithmetic number, because the mean of its divisors is an integer number (307152).

Almost surely, 23979717 is an apocalyptic number.

3979717 is the 1262-nd heptagonal number.

It is an amenable number.

3979717 is a deficient number, since it is larger than the sum of its proper divisors (934715).

3979717 is a wasteful number, since it uses less digits than its factorization.

3979717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708.

The product of its digits is 83349, while the sum is 43.

The square root of 3979717 is about 1994.9228055241. The cubic root of 3979717 is about 158.4713399403.

The spelling of 3979717 in words is "three million, nine hundred seventy-nine thousand, seven hundred seventeen".

Divisors: 1 7 17 53 119 371 631 901 4417 6307 10727 33443 75089 234101 568531 3979717