378906887 has 2 divisors, whose sum is σ = 378906888. Its totient is φ = 378906886.

The previous prime is 378906881. The next prime is 378906919. The reversal of 378906887 is 788609873.

It is a weak prime.

It is an emirp because it is prime and its reverse (788609873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378906887 - 2⁶ = 378906823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378906881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189453443 + 189453444.

It is an arithmetic number, because the mean of its divisors is an integer number (189453444).

Almost surely, 2^378906887 is an apocalyptic number.

378906887 is a deficient number, since it is larger than the sum of its proper divisors (1).

378906887 is an equidigital number, since it uses as much as digits as its factorization.

378906887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The square root of 378906887 is about 19465.5307402598. The cubic root of 378906887 is about 723.6204520133.

The spelling of 378906887 in words is "three hundred seventy-eight million, nine hundred six thousand, eight hundred eighty-seven".