378986077 has 2 divisors, whose sum is σ = 378986078. Its totient is φ = 378986076.

The previous prime is 378986053. The next prime is 378986099. The reversal of 378986077 is 770689873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333099001 + 45887076 = 18251^2 + 6774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378986077 is a prime.

It is a super-4 number, since 4×378986077⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378986177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189493038 + 189493039.

It is an arithmetic number, because the mean of its divisors is an integer number (189493039).

Almost surely, 2^378986077 is an apocalyptic number.

It is an amenable number.

378986077 is a deficient number, since it is larger than the sum of its proper divisors (1).

378986077 is an equidigital number, since it uses as much as digits as its factorization.

378986077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The square root of 378986077 is about 19467.5647424119. The cubic root of 378986077 is about 723.6708597467.

The spelling of 378986077 in words is "three hundred seventy-eight million, nine hundred eighty-six thousand, seventy-seven".