3198981 has 4 divisors (see below), whose sum is σ = 4265312. Its totient is φ = 2132652.

The previous prime is 3198977. The next prime is 3198991. The reversal of 3198981 is 1898913.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1898913 = 3 ⋅632971.

It is not a de Polignac number, because 3198981 - 2² = 3198977 is a prime.

It is a super-2 number, since 2×3198981² = 20466958876722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3198931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533161 + ... + 533166.

It is an arithmetic number, because the mean of its divisors is an integer number (1066328).

Almost surely, 2^3198981 is an apocalyptic number.

It is an amenable number.

3198981 is a deficient number, since it is larger than the sum of its proper divisors (1066331).

3198981 is a wasteful number, since it uses less digits than its factorization.

3198981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066330.

The product of its digits is 15552, while the sum is 39.

The square root of 3198981 is about 1788.5695401633. The cubic root of 3198981 is about 147.3456165013.

The spelling of 3198981 in words is "three million, one hundred ninety-eight thousand, nine hundred eighty-one".