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4000487 = 4339239
BaseRepresentation
bin1111010000101011100111
321112020122012
433100223213
52011003422
6221424435
746001141
oct17205347
97466565
104000487
112292697
12140b11b
13aa0b6a
14761c91
155404e2
hex3d0ae7

4000487 has 4 divisors (see below), whose sum is σ = 4010160. Its totient is φ = 3990816.

The previous prime is 4000439. The next prime is 4000489. The reversal of 4000487 is 7840004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-4000487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000489) 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, 4187 + ... + 5052.

It is an arithmetic number, because the mean of its divisors is an integer number (1002540).

Almost surely, 24000487 is an apocalyptic number.

4000487 is a deficient number, since it is larger than the sum of its proper divisors (9673).

4000487 is an equidigital number, since it uses as much as digits as its factorization.

4000487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9672.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 4000487 is about 2000.1217462945. The cubic root of 4000487 is about 158.7465471380.

The spelling of 4000487 in words is "four million, four hundred eighty-seven", and thus it is an aban number.

Divisors: 1 433 9239 4000487