16432979 has 2 divisors, whose sum is σ = 16432980. Its totient is φ = 16432978.

The previous prime is 16432943. The next prime is 16432981. The reversal of 16432979 is 97923461.

It is a strong prime.

It is an emirp because it is prime and its reverse (97923461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16432979 - 2¹⁶ = 16367443 is a prime.

Together with 16432981, 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 (16432909) 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, 8216489 + 8216490.

It is an arithmetic number, because the mean of its divisors is an integer number (8216490).

Almost surely, 2^16432979 is an apocalyptic number.

16432979 is a deficient number, since it is larger than the sum of its proper divisors (1).

16432979 is an equidigital number, since it uses as much as digits as its factorization.

16432979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 16432979 is about 4053.7610931085. The cubic root of 16432979 is about 254.2370067553.

The spelling of 16432979 in words is "sixteen million, four hundred thirty-two thousand, nine hundred seventy-nine".