384274657 has 4 divisors (see below), whose sum is σ = 413834260. Its totient is φ = 354715056.

The previous prime is 384274643. The next prime is 384274661. The reversal of 384274657 is 756472483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49787136 + 334487521 = 7056^2 + 18289^2 .

It is a cyclic number.

It is not a de Polignac number, because 384274657 - 2⁷ = 384274529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384274687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14779782 + ... + 14779807.

It is an arithmetic number, because the mean of its divisors is an integer number (103458565).

Almost surely, 2^384274657 is an apocalyptic number.

It is an amenable number.

384274657 is a deficient number, since it is larger than the sum of its proper divisors (29559603).

384274657 is a wasteful number, since it uses less digits than its factorization.

384274657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29559602.

The product of its digits is 1128960, while the sum is 46.

The square root of 384274657 is about 19602.9247052576. The cubic root of 384274657 is about 727.0214891979.

The spelling of 384274657 in words is "three hundred eighty-four million, two hundred seventy-four thousand, six hundred fifty-seven".