Search a number
-
+
3999988 = 227571321
BaseRepresentation
bin1111010000100011110100
321112012221201
433100203310
52010444423
6221422244
745666526
oct17204364
97465851
103999988
112292283
12140a984
13aa0875
14761a16
155402ad
hex3d08f4

3999988 has 12 divisors (see below), whose sum is σ = 7014532. Its totient is φ = 1995840.

The previous prime is 3999971. The next prime is 4000037. The reversal of 3999988 is 8899993.

3999988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3175524 + 824464 = 1782^2 + 908^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2368 + ... + 3688.

Almost surely, 23999988 is an apocalyptic number.

It is an amenable number.

3999988 is a deficient number, since it is larger than the sum of its proper divisors (3014544).

3999988 is a wasteful number, since it uses less digits than its factorization.

3999988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082 (or 2080 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 55.

The square root of 3999988 is about 1999.9969999977. The cubic root of 3999988 is about 158.7399464566.

The spelling of 3999988 in words is "three million, nine hundred ninety-nine thousand, nine hundred eighty-eight".

Divisors: 1 2 4 757 1321 1514 2642 3028 5284 999997 1999994 3999988