385275621 has 8 divisors (see below), whose sum is σ = 514642144. Its totient is φ = 256379760.

The previous prime is 385275617. The next prime is 385275623. The reversal of 385275621 is 126572583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 385275621 - 2² = 385275617 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 385275621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385275623) 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 7 ways as a sum of consecutive naturals, for example, 115750 + ... + 119031.

It is an arithmetic number, because the mean of its divisors is an integer number (64330268).

Almost surely, 2^385275621 is an apocalyptic number.

It is an amenable number.

385275621 is a deficient number, since it is larger than the sum of its proper divisors (129366523).

385275621 is a wasteful number, since it uses less digits than its factorization.

385275621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235331.

The product of its digits is 100800, while the sum is 39.

The square root of 385275621 is about 19628.4390872020. The cubic root of 385275621 is about 727.6521938055.

The spelling of 385275621 in words is "three hundred eighty-five million, two hundred seventy-five thousand, six hundred twenty-one".