4074639 has 4 divisors (see below), whose sum is σ = 5432856. Its totient is φ = 2716424.

The previous prime is 4074613. The next prime is 4074647. The reversal of 4074639 is 9364704.

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

It is a cyclic number.

It is not a de Polignac number, because 4074639 - 2¹² = 4070543 is a prime.

It is a D-number.

4074639 is a lucky number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4074649) 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 3 ways as a sum of consecutive naturals, for example, 679104 + ... + 679109.

It is an arithmetic number, because the mean of its divisors is an integer number (1358214).

Almost surely, 2^4074639 is an apocalyptic number.

4074639 is a deficient number, since it is larger than the sum of its proper divisors (1358217).

4074639 is a wasteful number, since it uses less digits than its factorization.

4074639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358216.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 4074639 is about 2018.5735062167. The cubic root of 4074639 is about 159.7213770687.

The spelling of 4074639 in words is "four million, seventy-four thousand, six hundred thirty-nine".