309098 has 8 divisors (see below), whose sum is σ = 476292. Its totient is φ = 150336.

The previous prime is 309091. The next prime is 309107. The reversal of 309098 is 890903.

It can be written as a sum of positive squares in 2 ways, for example, as 243049 + 66049 = 493^2 + 257^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 309098.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 309098.

It is not an unprimeable number, because it can be changed into a prime (309091) 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 in 3 ways as a sum of consecutive naturals, for example, 2015 + ... + 2162.

2³⁰⁹⁰⁹⁸ is an apocalyptic number.

309098 is a deficient number, since it is larger than the sum of its proper divisors (167194).

309098 is a wasteful number, since it uses less digits than its factorization.

309098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 309098 is about 555.9658262879. The cubic root of 309098 is about 67.6132894055.

The spelling of 309098 in words is "three hundred nine thousand, ninety-eight".