384634623 has 4 divisors (see below), whose sum is σ = 512846168. Its totient is φ = 256423080.

The previous prime is 384634609. The next prime is 384634633. The reversal of 384634623 is 326436483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326436483 = 3 ⋅108812161.

It is not a de Polignac number, because 384634623 - 2⁶ = 384634559 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 (384634603) 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, 64105768 + ... + 64105773.

It is an arithmetic number, because the mean of its divisors is an integer number (128211542).

Almost surely, 2^384634623 is an apocalyptic number.

384634623 is a deficient number, since it is larger than the sum of its proper divisors (128211545).

384634623 is a wasteful number, since it uses less digits than its factorization.

384634623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128211544.

The product of its digits is 248832, while the sum is 39.

The square root of 384634623 is about 19612.1039921779. The cubic root of 384634623 is about 727.2484287398.

The spelling of 384634623 in words is "three hundred eighty-four million, six hundred thirty-four thousand, six hundred twenty-three".