387969611 has 2 divisors, whose sum is σ = 387969612. Its totient is φ = 387969610.

The previous prime is 387969587. The next prime is 387969613. The reversal of 387969611 is 116969783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 387969611 - 2¹⁰ = 387968587 is a prime.

It is a Sophie Germain prime.

Together with 387969613, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387969611.

It is not a weakly prime, because it can be changed into another prime (387969613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193984805 + 193984806.

It is an arithmetic number, because the mean of its divisors is an integer number (193984806).

Almost surely, 2^387969611 is an apocalyptic number.

387969611 is a deficient number, since it is larger than the sum of its proper divisors (1).

387969611 is an equidigital number, since it uses as much as digits as its factorization.

387969611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 50.

The square root of 387969611 is about 19696.9442046222. The cubic root of 387969611 is about 729.3442607087.

The spelling of 387969611 in words is "three hundred eighty-seven million, nine hundred sixty-nine thousand, six hundred eleven".