14409979 has 2 divisors, whose sum is σ = 14409980. Its totient is φ = 14409978.

The previous prime is 14409977. The next prime is 14410003. The reversal of 14409979 is 97990441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 14409979 - 2¹ = 14409977 is a prime.

Together with 14409977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (14409971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7204989 + 7204990.

It is an arithmetic number, because the mean of its divisors is an integer number (7204990).

Almost surely, 2^14409979 is an apocalyptic number.

14409979 is a deficient number, since it is larger than the sum of its proper divisors (1).

14409979 is an equidigital number, since it uses as much as digits as its factorization.

14409979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 14409979 is about 3796.0478131868. The cubic root of 14409979 is about 243.3442652665.

The spelling of 14409979 in words is "fourteen million, four hundred nine thousand, nine hundred seventy-nine".