386909693 has 2 divisors, whose sum is σ = 386909694. Its totient is φ = 386909692.

The previous prime is 386909659. The next prime is 386909707. The reversal of 386909693 is 396909683.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198753604 + 188156089 = 14098^2 + 13717^2 .

It is an emirp because it is prime and its reverse (396909683) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386909693 is a prime.

It is a super-2 number, since 2×386909693² = 299398221074708498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386909093) 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 as a sum of consecutive naturals, namely, 193454846 + 193454847.

It is an arithmetic number, because the mean of its divisors is an integer number (193454847).

Almost surely, 2^386909693 is an apocalyptic number.

It is an amenable number.

386909693 is a deficient number, since it is larger than the sum of its proper divisors (1).

386909693 is an equidigital number, since it uses as much as digits as its factorization.

386909693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 53.

The square root of 386909693 is about 19670.0201575901. The cubic root of 386909693 is about 728.6794748294.

The spelling of 386909693 in words is "three hundred eighty-six million, nine hundred nine thousand, six hundred ninety-three".