384421479 has 16 divisors (see below), whose sum is σ = 552394752. Its totient is φ = 236393568.

The previous prime is 384421469. The next prime is 384421481. The reversal of 384421479 is 974124483.

It is not a de Polignac number, because 384421479 - 2⁷ = 384421351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 384421479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384421439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68394 + ... + 73800.

It is an arithmetic number, because the mean of its divisors is an integer number (34524672).

Almost surely, 2^384421479 is an apocalyptic number.

384421479 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

384421479 is a deficient number, since it is larger than the sum of its proper divisors (167973273).

384421479 is a wasteful number, since it uses less digits than its factorization.

384421479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7246.

The product of its digits is 193536, while the sum is 42.

The square root of 384421479 is about 19606.6692479880. The cubic root of 384421479 is about 727.1140698174.

The spelling of 384421479 in words is "three hundred eighty-four million, four hundred twenty-one thousand, four hundred seventy-nine".