387796481 has 2 divisors, whose sum is σ = 387796482. Its totient is φ = 387796480.

The previous prime is 387796471. The next prime is 387796499. The reversal of 387796481 is 184697783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331786225 + 56010256 = 18215^2 + 7484^2 .

It is a cyclic number.

It is not a de Polignac number, because 387796481 - 2⁶ = 387796417 is a prime.

It is a super-2 number, since 2×387796481² = 300772221351966722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (387796421) 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, 193898240 + 193898241.

It is an arithmetic number, because the mean of its divisors is an integer number (193898241).

Almost surely, 2^387796481 is an apocalyptic number.

It is an amenable number.

387796481 is a deficient number, since it is larger than the sum of its proper divisors (1).

387796481 is an equidigital number, since it uses as much as digits as its factorization.

387796481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 53.

The square root of 387796481 is about 19692.5488700676. The cubic root of 387796481 is about 729.2357555100.

The spelling of 387796481 in words is "three hundred eighty-seven million, seven hundred ninety-six thousand, four hundred eighty-one".