3920649 has 8 divisors (see below), whose sum is σ = 5454912. Its totient is φ = 2500080.

The previous prime is 3920629. The next prime is 3920677. The reversal of 3920649 is 9460293.

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

It is not a de Polignac number, because 3920649 - 2¹³ = 3912457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3920629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28342 + ... + 28479.

It is an arithmetic number, because the mean of its divisors is an integer number (681864).

Almost surely, 2^3920649 is an apocalyptic number.

It is an amenable number.

3920649 is a deficient number, since it is larger than the sum of its proper divisors (1534263).

3920649 is a wasteful number, since it uses less digits than its factorization.

3920649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56847.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 3920649 is about 1980.0628777895. The cubic root of 3920649 is about 157.6834043876.

The spelling of 3920649 in words is "three million, nine hundred twenty thousand, six hundred forty-nine".