48578639 has 4 divisors (see below), whose sum is σ = 51436224. Its totient is φ = 45721056.

The previous prime is 48578633. The next prime is 48578711. The reversal of 48578639 is 93687584.

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 48578639 - 2⁴ = 48578623 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 (48578633) 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, 1428767 + ... + 1428800.

It is an arithmetic number, because the mean of its divisors is an integer number (12859056).

Almost surely, 2^48578639 is an apocalyptic number.

48578639 is a deficient number, since it is larger than the sum of its proper divisors (2857585).

48578639 is a wasteful number, since it uses less digits than its factorization.

48578639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857584.

The product of its digits is 1451520, while the sum is 50.

The square root of 48578639 is about 6969.8378029908. The cubic root of 48578639 is about 364.8786460899.

The spelling of 48578639 in words is "forty-eight million, five hundred seventy-eight thousand, six hundred thirty-nine".