386875421 has 2 divisors, whose sum is σ = 386875422. Its totient is φ = 386875420.

The previous prime is 386875417. The next prime is 386875451. The reversal of 386875421 is 124578683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231374521 + 155500900 = 15211^2 + 12470^2 .

It is an emirp because it is prime and its reverse (124578683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 386875421 - 2² = 386875417 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386875451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193437710 + 193437711.

It is an arithmetic number, because the mean of its divisors is an integer number (193437711).

Almost surely, 2^386875421 is an apocalyptic number.

It is an amenable number.

386875421 is a deficient number, since it is larger than the sum of its proper divisors (1).

386875421 is an equidigital number, since it uses as much as digits as its factorization.

386875421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 44.

The square root of 386875421 is about 19669.1489648129. The cubic root of 386875421 is about 728.6579590073.

The spelling of 386875421 in words is "three hundred eighty-six million, eight hundred seventy-five thousand, four hundred twenty-one".