5078639 has 4 divisors (see below), whose sum is σ = 5090400. Its totient is φ = 5066880.

The previous prime is 5078617. The next prime is 5078651. The reversal of 5078639 is 9368705.

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 5078639 - 2²⁰ = 4030063 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5078609) 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, 5207 + ... + 6104.

It is an arithmetic number, because the mean of its divisors is an integer number (1272600).

Almost surely, 2^5078639 is an apocalyptic number.

5078639 is a deficient number, since it is larger than the sum of its proper divisors (11761).

5078639 is a wasteful number, since it uses less digits than its factorization.

5078639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11760.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 5078639 is about 2253.5835906396. The cubic root of 5078639 is about 171.8894074534.

The spelling of 5078639 in words is "five million, seventy-eight thousand, six hundred thirty-nine".