43048639 has 4 divisors (see below), whose sum is σ = 43691224. Its totient is φ = 42406056.

The previous prime is 43048613. The next prime is 43048657. The reversal of 43048639 is 93684034.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93684034 = 2 ⋅46842017.

It is a cyclic number.

It is not a de Polignac number, because 43048639 - 2²⁵ = 9494207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43048598 and 43048607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43048679) 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, 321192 + ... + 321325.

It is an arithmetic number, because the mean of its divisors is an integer number (10922806).

Almost surely, 2^43048639 is an apocalyptic number.

43048639 is a deficient number, since it is larger than the sum of its proper divisors (642585).

43048639 is an equidigital number, since it uses as much as digits as its factorization.

43048639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642584.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 43048639 is about 6561.1461651148. The cubic root of 43048639 is about 350.4718506660.

The spelling of 43048639 in words is "forty-three million, forty-eight thousand, six hundred thirty-nine".