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3988417 = 38910253
BaseRepresentation
bin1111001101101111000001
321111122002011
433031233001
52010112132
6221252521
745621016
oct17155701
97448064
103988417
112284614
121404141
13a98514
1475b70d
1553bb47
hex3cdbc1

3988417 has 4 divisors (see below), whose sum is σ = 3999060. Its totient is φ = 3977776.

The previous prime is 3988403. The next prime is 3988427. The reversal of 3988417 is 7148893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 690561 + 3297856 = 831^2 + 1816^2 .

It is a cyclic number.

It is not a de Polignac number, because 3988417 - 27 = 3988289 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 3988417.

It is not an unprimeable number, because it can be changed into a prime (3988427) 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 3 ways as a sum of consecutive naturals, for example, 4738 + ... + 5515.

It is an arithmetic number, because the mean of its divisors is an integer number (999765).

Almost surely, 23988417 is an apocalyptic number.

It is an amenable number.

3988417 is a deficient number, since it is larger than the sum of its proper divisors (10643).

3988417 is a wasteful number, since it uses less digits than its factorization.

3988417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10642.

The product of its digits is 48384, while the sum is 40.

The square root of 3988417 is about 1997.1021506172. The cubic root of 3988417 is about 158.5867331725.

The spelling of 3988417 in words is "three million, nine hundred eighty-eight thousand, four hundred seventeen".

Divisors: 1 389 10253 3988417