16030409 has 2 divisors, whose sum is σ = 16030410. Its totient is φ = 16030408.

The previous prime is 16030397. The next prime is 16030411. The reversal of 16030409 is 90403061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16024009 + 6400 = 4003^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 16030409 - 2⁴ = 16030393 is a prime.

Together with 16030411, 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 (16030459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8015204 + 8015205.

It is an arithmetic number, because the mean of its divisors is an integer number (8015205).

Almost surely, 2^16030409 is an apocalyptic number.

It is an amenable number.

16030409 is a deficient number, since it is larger than the sum of its proper divisors (1).

16030409 is an equidigital number, since it uses as much as digits as its factorization.

16030409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 16030409 is about 4003.7993206453. The cubic root of 16030409 is about 252.1437461988.

The spelling of 16030409 in words is "sixteen million, thirty thousand, four hundred nine".