16749979 has 2 divisors, whose sum is σ = 16749980. Its totient is φ = 16749978.

The previous prime is 16749949. The next prime is 16750009. The reversal of 16749979 is 97994761.

It is a balanced prime because it is at equal distance from previous prime (16749949) and next prime (16750009).

It is a cyclic number.

It is not a de Polignac number, because 16749979 - 2¹⁹ = 16225691 is a prime.

It is not a weakly prime, because it can be changed into another prime (16749949) 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, 8374989 + 8374990.

It is an arithmetic number, because the mean of its divisors is an integer number (8374990).

Almost surely, 2^16749979 is an apocalyptic number.

16749979 is a deficient number, since it is larger than the sum of its proper divisors (1).

16749979 is an equidigital number, since it uses as much as digits as its factorization.

16749979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 52.

The square root of 16749979 is about 4092.6738203771. The cubic root of 16749979 is about 255.8613904184.

The spelling of 16749979 in words is "sixteen million, seven hundred forty-nine thousand, nine hundred seventy-nine".