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3963987 = 32440443
BaseRepresentation
bin1111000111110001010011
321110101120100
433013301103
52003321422
6220543443
745456546
oct17076123
97411510
103963987
112268225
1213b1b83
13a8a371
1475285d
155347ac
hex3c7c53

3963987 has 6 divisors (see below), whose sum is σ = 5725772. Its totient is φ = 2642652.

The previous prime is 3963979. The next prime is 3963991. The reversal of 3963987 is 7893693.

It is a happy number.

3963987 is a `hidden beast` number, since 3 + 9 + 639 + 8 + 7 = 666.

It is not a de Polignac number, because 3963987 - 23 = 3963979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3963977) 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 5 ways as a sum of consecutive naturals, for example, 220213 + ... + 220230.

Almost surely, 23963987 is an apocalyptic number.

3963987 is a deficient number, since it is larger than the sum of its proper divisors (1761785).

3963987 is a wasteful number, since it uses less digits than its factorization.

3963987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440449 (or 440446 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 3963987 is about 1990.9763936320. The cubic root of 3963987 is about 158.2622760256.

It can be divided in two parts, 3963 and 987, that added together give a triangular number (4950 = T99).

The spelling of 3963987 in words is "three million, nine hundred sixty-three thousand, nine hundred eighty-seven".

Divisors: 1 3 9 440443 1321329 3963987