385538421 has 16 divisors (see below), whose sum is σ = 518758400. Its totient is φ = 254683440.

The previous prime is 385538401. The next prime is 385538423. The reversal of 385538421 is 124835583.

It is not a de Polignac number, because 385538421 - 2⁹ = 385537909 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 385538421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385538423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160596 + ... + 162978.

It is an arithmetic number, because the mean of its divisors is an integer number (32422400).

Almost surely, 2^385538421 is an apocalyptic number.

It is an amenable number.

385538421 is a deficient number, since it is larger than the sum of its proper divisors (133219979).

385538421 is a wasteful number, since it uses less digits than its factorization.

385538421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856.

The product of its digits is 115200, while the sum is 39.

The square root of 385538421 is about 19635.1323142983. The cubic root of 385538421 is about 727.8176022589.

The spelling of 385538421 in words is "three hundred eighty-five million, five hundred thirty-eight thousand, four hundred twenty-one".