384504121 has 16 divisors (see below), whose sum is σ = 417484800. Its totient is φ = 352976400.

The previous prime is 384504103. The next prime is 384504137. The reversal of 384504121 is 121405483.

384504121 = 1385² + 1386² + ... + 1561².

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384504121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 384504121.

It is not an unprimeable number, because it can be changed into a prime (384504101) 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, 77176 + ... + 82006.

It is an arithmetic number, because the mean of its divisors is an integer number (26092800).

Almost surely, 2^384504121 is an apocalyptic number.

It is an amenable number.

384504121 is a deficient number, since it is larger than the sum of its proper divisors (32980679).

384504121 is a wasteful number, since it uses less digits than its factorization.

384504121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4980.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 384504121 is about 19608.7766319064. The cubic root of 384504121 is about 727.1661704922.

The spelling of 384504121 in words is "three hundred eighty-four million, five hundred four thousand, one hundred twenty-one".