16098409 has 8 divisors (see below), whose sum is σ = 16363080. Its totient is φ = 15835776.

The previous prime is 16098403. The next prime is 16098421. The reversal of 16098409 is 90489061.

It can be written as a sum of positive squares in 4 ways, for example, as 138384 + 15960025 = 372^2 + 3995^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16098409 - 2²¹ = 14001257 is a prime.

It is a super-4 number, since 4×16098409⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16098403) 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 in 7 ways as a sum of consecutive naturals, for example, 24327 + ... + 24979.

It is an arithmetic number, because the mean of its divisors is an integer number (2045385).

Almost surely, 2^16098409 is an apocalyptic number.

It is an amenable number.

16098409 is a deficient number, since it is larger than the sum of its proper divisors (264671).

16098409 is an equidigital number, since it uses as much as digits as its factorization.

16098409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 16098409 is about 4012.2822682359. The cubic root of 16098409 is about 252.4997693035.

The spelling of 16098409 in words is "sixteen million, ninety-eight thousand, four hundred nine".