384378957 has 6 divisors (see below), whose sum is σ = 555214062. Its totient is φ = 256252632.

The previous prime is 384378947. The next prime is 384378961. The reversal of 384378957 is 759873483.

It can be written as a sum of positive squares in only one way, i.e., 308845476 + 75533481 = 17574^2 + 8691^2 .

It is not a de Polignac number, because 384378957 - 2⁴ = 384378941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384378937) 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, 21354378 + ... + 21354395.

It is an arithmetic number, because the mean of its divisors is an integer number (92535677).

Almost surely, 2^384378957 is an apocalyptic number.

It is an amenable number.

384378957 is a deficient number, since it is larger than the sum of its proper divisors (170835105).

384378957 is a wasteful number, since it uses less digits than its factorization.

384378957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42708779 (or 42708776 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The square root of 384378957 is about 19605.5848420801. The cubic root of 384378957 is about 727.0872594142.

The spelling of 384378957 in words is "three hundred eighty-four million, three hundred seventy-eight thousand, nine hundred fifty-seven".