983409 has 8 divisors (see below), whose sum is σ = 1498560. Its totient is φ = 561936.

The previous prime is 983407. The next prime is 983429. The reversal of 983409 is 904389.

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

It is not a de Polignac number, because 983409 - 2¹ = 983407 is a prime.

It is a super-2 number, since 2×983409² = 1934186522562, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 983409.

It is not an unprimeable number, because it can be changed into a prime (983407) 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, 23394 + ... + 23435.

It is an arithmetic number, because the mean of its divisors is an integer number (187320).

2⁹⁸³⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

983409 is a deficient number, since it is larger than the sum of its proper divisors (515151).

983409 is a wasteful number, since it uses less digits than its factorization.

983409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46839.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 983409 is about 991.6698039166. The cubic root of 983409 is about 99.4438797018.

The spelling of 983409 in words is "nine hundred eighty-three thousand, four hundred nine".