387340477 has 2 divisors, whose sum is σ = 387340478. Its totient is φ = 387340476.

The previous prime is 387340469. The next prime is 387340579. The reversal of 387340477 is 774043783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323244441 + 64096036 = 17979^2 + 8006^2 .

It is an emirp because it is prime and its reverse (774043783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 387340477 - 2³ = 387340469 is a prime.

It is a super-3 number, since 3×387340477³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387340417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193670238 + 193670239.

It is an arithmetic number, because the mean of its divisors is an integer number (193670239).

Almost surely, 2^387340477 is an apocalyptic number.

It is an amenable number.

387340477 is a deficient number, since it is larger than the sum of its proper divisors (1).

387340477 is an equidigital number, since it uses as much as digits as its factorization.

387340477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 43.

The square root of 387340477 is about 19680.9673796793. The cubic root of 387340477 is about 728.9498109801.

The spelling of 387340477 in words is "three hundred eighty-seven million, three hundred forty thousand, four hundred seventy-seven".