3098981 has 8 divisors (see below), whose sum is σ = 3296664. Its totient is φ = 2903040.

The previous prime is 3098959. The next prime is 3098999. The reversal of 3098981 is 1898903.

It can be written as a sum of positive squares in 4 ways, for example, as 4900 + 3094081 = 70^2 + 1759^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3098981 is a prime.

It is a super-2 number, since 2×3098981² = 19207366476722, which contains 22 as substring.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3098941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6941 + ... + 7373.

It is an arithmetic number, because the mean of its divisors is an integer number (412083).

Almost surely, 2^3098981 is an apocalyptic number.

It is an amenable number.

3098981 is a deficient number, since it is larger than the sum of its proper divisors (197683).

3098981 is a wasteful number, since it uses less digits than its factorization.

3098981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 3098981 is about 1760.3922858272. The cubic root of 3098981 is about 145.7939954487.

The spelling of 3098981 in words is "three million, ninety-eight thousand, nine hundred eighty-one".