387696787 has 2 divisors, whose sum is σ = 387696788. Its totient is φ = 387696786.

The previous prime is 387696769. The next prime is 387696811. The reversal of 387696787 is 787696783.

It is a weak prime.

It is an emirp because it is prime and its reverse (787696783) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387696787 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (387696187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193848393 + 193848394.

It is an arithmetic number, because the mean of its divisors is an integer number (193848394).

Almost surely, 2^387696787 is an apocalyptic number.

387696787 is a deficient number, since it is larger than the sum of its proper divisors (1).

387696787 is an equidigital number, since it uses as much as digits as its factorization.

387696787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21337344, while the sum is 61.

The square root of 387696787 is about 19690.0174453960. The cubic root of 387696787 is about 729.1732599625.

The spelling of 387696787 in words is "three hundred eighty-seven million, six hundred ninety-six thousand, seven hundred eighty-seven".