8042649 has 16 divisors (see below), whose sum is σ = 11430720. Its totient is φ = 5012480.

The previous prime is 8042647. The next prime is 8042659. The reversal of 8042649 is 9462408.

8042649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8042649 - 2¹ = 8042647 is a prime.

8042649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8042641) 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 15 ways as a sum of consecutive naturals, for example, 8689 + ... + 9569.

It is an arithmetic number, because the mean of its divisors is an integer number (714420).

Almost surely, 2^8042649 is an apocalyptic number.

It is an amenable number.

8042649 is a deficient number, since it is larger than the sum of its proper divisors (3388071).

8042649 is a wasteful number, since it uses less digits than its factorization.

8042649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 8042649 is about 2835.9564524160. The cubic root of 8042649 is about 200.3547786219.

The spelling of 8042649 in words is "eight million, forty-two thousand, six hundred forty-nine".