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3988011 = 31329337
BaseRepresentation
bin1111001101101000101011
321111121112010
433031220223
52010104021
6221251003
745616566
oct17155053
97447463
103988011
112284285
121403a63
13a98291
1475b4dd
1553b976
hex3cda2b

3988011 has 4 divisors (see below), whose sum is σ = 5317352. Its totient is φ = 2658672.

The previous prime is 3988007. The next prime is 3988021. The reversal of 3988011 is 1108893.

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

It is not a de Polignac number, because 3988011 - 22 = 3988007 is a prime.

It is a super-3 number, since 3×39880113 (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a D-number.

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 3988011.

It is not an unprimeable number, because it can be changed into a prime (3988021) 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, 664666 + ... + 664671.

It is an arithmetic number, because the mean of its divisors is an integer number (1329338).

Almost surely, 23988011 is an apocalyptic number.

3988011 is a deficient number, since it is larger than the sum of its proper divisors (1329341).

3988011 is a wasteful number, since it uses less digits than its factorization.

3988011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329340.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 3988011 is about 1997.0005007511. Note that the first 3 decimals coincide. The cubic root of 3988011 is about 158.5813518898.

The spelling of 3988011 in words is "three million, nine hundred eighty-eight thousand, eleven".

Divisors: 1 3 1329337 3988011