384547879 has 4 divisors (see below), whose sum is σ = 401267376. Its totient is φ = 367828384.

The previous prime is 384547873. The next prime is 384547957. The reversal of 384547879 is 978745483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978745483 = 1181 ⋅828743.

It is a cyclic number.

It is not a de Polignac number, because 384547879 - 2⁵ = 384547847 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 (384547873) 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, 8359714 + ... + 8359759.

It is an arithmetic number, because the mean of its divisors is an integer number (100316844).

Almost surely, 2^384547879 is an apocalyptic number.

384547879 is a deficient number, since it is larger than the sum of its proper divisors (16719497).

384547879 is a wasteful number, since it uses less digits than its factorization.

384547879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16719496.

The product of its digits is 6773760, while the sum is 55.

The square root of 384547879 is about 19609.8923760433. The cubic root of 384547879 is about 727.1937541847.

The spelling of 384547879 in words is "three hundred eighty-four million, five hundred forty-seven thousand, eight hundred seventy-nine".