16406459 has 2 divisors, whose sum is σ = 16406460. Its totient is φ = 16406458.

The previous prime is 16406419. The next prime is 16406473. The reversal of 16406459 is 95460461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16406459 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16406419) 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, 8203229 + 8203230.

It is an arithmetic number, because the mean of its divisors is an integer number (8203230).

Almost surely, 2^16406459 is an apocalyptic number.

16406459 is a deficient number, since it is larger than the sum of its proper divisors (1).

16406459 is an equidigital number, since it uses as much as digits as its factorization.

16406459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 16406459 is about 4050.4887359429. The cubic root of 16406459 is about 254.1001681926.

The spelling of 16406459 in words is "sixteen million, four hundred six thousand, four hundred fifty-nine".