385038457 has 6 divisors (see below), whose sum is σ = 409020398. Its totient is φ = 362388864.

The previous prime is 385038443. The next prime is 385038509. The reversal of 385038457 is 754830583.

It can be written as a sum of positive squares in 3 ways, for example, as 128686336 + 256352121 = 11344^2 + 16011^2 .

It is a de Polignac number, because none of the positive numbers 2^k-385038457 is a prime.

It is a super-2 number, since 2×385038457² = 296509226737881698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385032457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 665868 + ... + 666445.

Almost surely, 2^385038457 is an apocalyptic number.

It is an amenable number.

385038457 is a deficient number, since it is larger than the sum of its proper divisors (23981941).

385038457 is a wasteful number, since it uses less digits than its factorization.

385038457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332347 (or 1332330 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 385038457 is about 19622.3968209798. The cubic root of 385038457 is about 727.5028562769.

The spelling of 385038457 in words is "three hundred eighty-five million, thirty-eight thousand, four hundred fifty-seven".