387655393 has 2 divisors, whose sum is σ = 387655394. Its totient is φ = 387655392.

The previous prime is 387655351. The next prime is 387655399. The reversal of 387655393 is 393556783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357096609 + 30558784 = 18897^2 + 5528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387655393 is a prime.

It is not a weakly prime, because it can be changed into another prime (387655399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193827696 + 193827697.

It is an arithmetic number, because the mean of its divisors is an integer number (193827697).

Almost surely, 2^387655393 is an apocalyptic number.

It is an amenable number.

387655393 is a deficient number, since it is larger than the sum of its proper divisors (1).

387655393 is an equidigital number, since it uses as much as digits as its factorization.

387655393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 49.

The square root of 387655393 is about 19688.9662755565. The cubic root of 387655393 is about 729.1473080045.

The spelling of 387655393 in words is "three hundred eighty-seven million, six hundred fifty-five thousand, three hundred ninety-three".