16729289 has 2 divisors, whose sum is σ = 16729290. Its totient is φ = 16729288.

The previous prime is 16729267. The next prime is 16729301. The reversal of 16729289 is 98292761.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12390400 + 4338889 = 3520^2 + 2083^2 .

It is a cyclic number.

It is not a de Polignac number, because 16729289 - 2⁸ = 16729033 is a prime.

It is a super-2 number, since 2×16729289² = 559738220891042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16729589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8364644 + 8364645.

It is an arithmetic number, because the mean of its divisors is an integer number (8364645).

Almost surely, 2^16729289 is an apocalyptic number.

It is an amenable number.

16729289 is a deficient number, since it is larger than the sum of its proper divisors (1).

16729289 is an equidigital number, since it uses as much as digits as its factorization.

16729289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 44.

The square root of 16729289 is about 4090.1453519404. The cubic root of 16729289 is about 255.7559981801.

The spelling of 16729289 in words is "sixteen million, seven hundred twenty-nine thousand, two hundred eighty-nine".