3949618 has 8 divisors (see below), whose sum is σ = 5935212. Its totient is φ = 1971216.

The previous prime is 3949609. The next prime is 3949619. The reversal of 3949618 is 8169493.

It can be written as a sum of positive squares in 2 ways, for example, as 2199289 + 1750329 = 1483^2 + 1323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3949619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105 + ... + 2812.

Almost surely, 2^3949618 is an apocalyptic number.

3949618 is a deficient number, since it is larger than the sum of its proper divisors (1985594).

3949618 is a wasteful number, since it uses less digits than its factorization.

3949618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596.

The product of its digits is 46656, while the sum is 40.

The square root of 3949618 is about 1987.3645865819. The cubic root of 3949618 is about 158.0708169433.

The spelling of 3949618 in words is "three million, nine hundred forty-nine thousand, six hundred eighteen".