4395649 has 4 divisors (see below), whose sum is σ = 4425300. Its totient is φ = 4366000.

The previous prime is 4395641. The next prime is 4395653. The reversal of 4395649 is 9465934.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1065024 + 3330625 = 1032^2 + 1825^2 .

It is a cyclic number.

It is not a de Polignac number, because 4395649 - 2³ = 4395641 is a prime.

It is a super-3 number, since 3×4395649³ (a number of 21 digits) contains 333 as substring.

4395649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4395641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14602 + ... + 14899.

It is an arithmetic number, because the mean of its divisors is an integer number (1106325).

Almost surely, 2^4395649 is an apocalyptic number.

It is an amenable number.

4395649 is a deficient number, since it is larger than the sum of its proper divisors (29651).

4395649 is a wasteful number, since it uses less digits than its factorization.

4395649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29650.

The product of its digits is 116640, while the sum is 40.

The square root of 4395649 is about 2096.5803108872. The cubic root of 4395649 is about 163.8102231724.

The spelling of 4395649 in words is "four million, three hundred ninety-five thousand, six hundred forty-nine".