385631417 has 4 divisors (see below), whose sum is σ = 408315636. Its totient is φ = 362947200.

The previous prime is 385631387. The next prime is 385631443. The reversal of 385631417 is 714136583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 714136583 = 7753 ⋅92111.

It can be written as a sum of positive squares in 2 ways, for example, as 144264121 + 241367296 = 12011^2 + 15536^2 .

It is a cyclic number.

It is not a de Polignac number, because 385631417 - 2¹⁰ = 385630393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385631497) 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, 11342084 + ... + 11342117.

It is an arithmetic number, because the mean of its divisors is an integer number (102078909).

Almost surely, 2^385631417 is an apocalyptic number.

It is an amenable number.

385631417 is a deficient number, since it is larger than the sum of its proper divisors (22684219).

385631417 is a wasteful number, since it uses less digits than its factorization.

385631417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22684218.

The product of its digits is 60480, while the sum is 38.

The square root of 385631417 is about 19637.5002737110. The cubic root of 385631417 is about 727.8761166902.

The spelling of 385631417 in words is "three hundred eighty-five million, six hundred thirty-one thousand, four hundred seventeen".