384477 has 4 divisors (see below), whose sum is σ = 512640. Its totient is φ = 256316.

The previous prime is 384473. The next prime is 384479. The reversal of 384477 is 774483.

It is a happy number.

384477 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 774483 = 3 ⋅258161.

It is a cyclic number.

It is not a de Polignac number, because 384477 - 2² = 384473 is a prime.

It is a d-powerful number, because it can be written as 3³ + 8³ + 4⁶ + 4⁹ + 7² + 7⁶ .

It is a D-number.

384477 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 384477.

It is not an unprimeable number, because it can be changed into a prime (384473) 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, 64077 + ... + 64082.

It is an arithmetic number, because the mean of its divisors is an integer number (128160).

2³⁸⁴⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

384477 is a deficient number, since it is larger than the sum of its proper divisors (128163).

384477 is a wasteful number, since it uses less digits than its factorization.

384477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128162.

The product of its digits is 18816, while the sum is 33.

The square root of 384477 is about 620.0620936648. The cubic root of 384477 is about 72.7149073200.

It can be divided in two parts, 384 and 477, that added together give a triangular number (861 = T₄₁).

The spelling of 384477 in words is "three hundred eighty-four thousand, four hundred seventy-seven".