4640039 has 4 divisors (see below), whose sum is σ = 4644456. Its totient is φ = 4635624.

The previous prime is 4640017. The next prime is 4640057. The reversal of 4640039 is 9300464.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4640039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4643039) 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, 377 + ... + 3069.

It is an arithmetic number, because the mean of its divisors is an integer number (1161114).

Almost surely, 2^4640039 is an apocalyptic number.

4640039 is a deficient number, since it is larger than the sum of its proper divisors (4417).

4640039 is a wasteful number, since it uses less digits than its factorization.

4640039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 4640039 is about 2154.0749754825. The cubic root of 4640039 is about 166.7914856092.

The spelling of 4640039 in words is "four million, six hundred forty thousand, thirty-nine".