16378979 has 2 divisors, whose sum is σ = 16378980. Its totient is φ = 16378978.

The previous prime is 16378963. The next prime is 16378981. The reversal of 16378979 is 97987361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16378979 - 2⁴ = 16378963 is a prime.

Together with 16378981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16375979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8189489 + 8189490.

It is an arithmetic number, because the mean of its divisors is an integer number (8189490).

Almost surely, 2^16378979 is an apocalyptic number.

16378979 is a deficient number, since it is larger than the sum of its proper divisors (1).

16378979 is an equidigital number, since it uses as much as digits as its factorization.

16378979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 50.

The square root of 16378979 is about 4047.0951310786. The cubic root of 16378979 is about 253.9582205447.

The spelling of 16378979 in words is "sixteen million, three hundred seventy-eight thousand, nine hundred seventy-nine".