386750421 has 12 divisors (see below), whose sum is σ = 563766060. Its totient is φ = 255467520.

The previous prime is 386750401. The next prime is 386750437. The reversal of 386750421 is 124057683.

It can be written as a sum of positive squares in 2 ways, for example, as 130302225 + 256448196 = 11415^2 + 16014^2 .

It is not a de Polignac number, because 386750421 - 2¹³ = 386742229 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386750401) 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 11 ways as a sum of consecutive naturals, for example, 196140 + ... + 198101.

It is an arithmetic number, because the mean of its divisors is an integer number (46980505).

Almost surely, 2^386750421 is an apocalyptic number.

It is an amenable number.

386750421 is a deficient number, since it is larger than the sum of its proper divisors (177015639).

386750421 is a wasteful number, since it uses less digits than its factorization.

386750421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394356 (or 394353 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 386750421 is about 19665.9711430684. The cubic root of 386750421 is about 728.5794737454.

The spelling of 386750421 in words is "three hundred eighty-six million, seven hundred fifty thousand, four hundred twenty-one".