378987967 has 2 divisors, whose sum is σ = 378987968. Its totient is φ = 378987966.

The previous prime is 378987949. The next prime is 378987977. The reversal of 378987967 is 769789873.

It is a strong prime.

It is an emirp because it is prime and its reverse (769789873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378987967 - 2⁷ = 378987839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 378987899 and 378987908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378987977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189493983 + 189493984.

It is an arithmetic number, because the mean of its divisors is an integer number (189493984).

Almost surely, 2^378987967 is an apocalyptic number.

378987967 is a deficient number, since it is larger than the sum of its proper divisors (1).

378987967 is an equidigital number, since it uses as much as digits as its factorization.

378987967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32006016, while the sum is 64.

The square root of 378987967 is about 19467.6132846325. The cubic root of 378987967 is about 723.6720627246.

It can be divided in two parts, 37 and 8987967, that added together give a square (8988004 = 2998²).

The spelling of 378987967 in words is "three hundred seventy-eight million, nine hundred eighty-seven thousand, nine hundred sixty-seven".