384702139 has 16 divisors (see below), whose sum is σ = 429156000. Its totient is φ = 343284480.

The previous prime is 384702103. The next prime is 384702151. The reversal of 384702139 is 931207483.

It is a cyclic number.

It is not a de Polignac number, because 384702139 - 2¹¹ = 384700091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 384702098 and 384702107.

It is not an unprimeable number, because it can be changed into a prime (384702169) 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, 14077 + ... + 31105.

It is an arithmetic number, because the mean of its divisors is an integer number (26822250).

Almost surely, 2^384702139 is an apocalyptic number.

384702139 is a deficient number, since it is larger than the sum of its proper divisors (44453861).

384702139 is a wasteful number, since it uses less digits than its factorization.

384702139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17118.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 384702139 is about 19613.8252006079. The cubic root of 384702139 is about 727.2909782394.

The spelling of 384702139 in words is "three hundred eighty-four million, seven hundred two thousand, one hundred thirty-nine".