384401671 has 4 divisors (see below), whose sum is σ = 407013552. Its totient is φ = 361789792.

The previous prime is 384401669. The next prime is 384401683. The reversal of 384401671 is 176104483.

It is a happy number.

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 384401671 - 2¹ = 384401669 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 (384401651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11305915 + ... + 11305948.

It is an arithmetic number, because the mean of its divisors is an integer number (101753388).

Almost surely, 2^384401671 is an apocalyptic number.

384401671 is a deficient number, since it is larger than the sum of its proper divisors (22611881).

384401671 is a wasteful number, since it uses less digits than its factorization.

384401671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22611880.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 384401671 is about 19606.1641072393. The cubic root of 384401671 is about 727.1015809879.

The spelling of 384401671 in words is "three hundred eighty-four million, four hundred one thousand, six hundred seventy-one".