16900909 has 2 divisors, whose sum is σ = 16900910. Its totient is φ = 16900908.

The previous prime is 16900903. The next prime is 16900927. The reversal of 16900909 is 90900961.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15642025 + 1258884 = 3955^2 + 1122^2 .

It is a cyclic number.

It is not a de Polignac number, because 16900909 - 2¹³ = 16892717 is a prime.

It is equal to p_1085299 and since 16900909 and 1085299 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16900903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8450454 + 8450455.

It is an arithmetic number, because the mean of its divisors is an integer number (8450455).

Almost surely, 2^16900909 is an apocalyptic number.

It is an amenable number.

16900909 is a deficient number, since it is larger than the sum of its proper divisors (1).

16900909 is an equidigital number, since it uses as much as digits as its factorization.

16900909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 16900909 is about 4111.0715148243. The cubic root of 16900909 is about 256.6275952970.

The spelling of 16900909 in words is "sixteen million, nine hundred thousand, nine hundred nine".