4395987 has 12 divisors (see below), whose sum is σ = 6437704. Its totient is φ = 2890080.

The previous prime is 4395983. The next prime is 4395997. The reversal of 4395987 is 7895934.

It is not a de Polignac number, because 4395987 - 2² = 4395983 is a prime.

It is an Ulam number.

It is a Duffinian number.

4395987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4395983) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2689 + ... + 4002.

Almost surely, 2^4395987 is an apocalyptic number.

4395987 is a deficient number, since it is larger than the sum of its proper divisors (2041717).

4395987 is a wasteful number, since it uses less digits than its factorization.

4395987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770 (or 6767 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 4395987 is about 2096.6609167913. The cubic root of 4395987 is about 163.8144217512.

The spelling of 4395987 in words is "four million, three hundred ninety-five thousand, nine hundred eighty-seven".