384721479 has 6 divisors (see below), whose sum is σ = 555708816. Its totient is φ = 256480980.

The previous prime is 384721471. The next prime is 384721487. The reversal of 384721479 is 974127483.

384721479 is a `hidden beast` number, since 38 + 472 + 147 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (384721471) and next prime (384721487).

It is not a de Polignac number, because 384721479 - 2³ = 384721471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384721471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21373407 + ... + 21373424.

It is an arithmetic number, because the mean of its divisors is an integer number (92618136).

Almost surely, 2^384721479 is an apocalyptic number.

384721479 is a deficient number, since it is larger than the sum of its proper divisors (170987337).

384721479 is a wasteful number, since it uses less digits than its factorization.

384721479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42746837 (or 42746834 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 384721479 is about 19614.3182139987. The cubic root of 384721479 is about 727.3031656527.

The spelling of 384721479 in words is "three hundred eighty-four million, seven hundred twenty-one thousand, four hundred seventy-nine".