378964979 has 2 divisors, whose sum is σ = 378964980. Its totient is φ = 378964978.

The previous prime is 378964933. The next prime is 378964991. The reversal of 378964979 is 979469873.

It is a strong prime.

It is an emirp because it is prime and its reverse (979469873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378964979 - 2⁸ = 378964723 is a prime.

It is a super-2 number, since 2×378964979² = 287228910616940882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (378964279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189482489 + 189482490.

It is an arithmetic number, because the mean of its divisors is an integer number (189482490).

Almost surely, 2^378964979 is an apocalyptic number.

378964979 is a deficient number, since it is larger than the sum of its proper divisors (1).

378964979 is an equidigital number, since it uses as much as digits as its factorization.

378964979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20575296, while the sum is 62.

The square root of 378964979 is about 19467.0228591842. The cubic root of 378964979 is about 723.6574306771.

It can be divided in two parts, 37896 and 4979, that added together give a cube (42875 = 35³).

The spelling of 378964979 in words is "three hundred seventy-eight million, nine hundred sixty-four thousand, nine hundred seventy-nine".