1983455 has 8 divisors (see below), whose sum is σ = 2462400. Its totient is φ = 1531936.

The previous prime is 1983439. The next prime is 1983463. The reversal of 1983455 is 5543891.

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 1983455 - 2⁴ = 1983439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6695 + ... + 6984.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

2^1983455 is an apocalyptic number.

1983455 is a deficient number, since it is larger than the sum of its proper divisors (478945).

1983455 is a wasteful number, since it uses less digits than its factorization.

1983455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13713.

The product of its digits is 21600, while the sum is 35.

The square root of 1983455 is about 1408.3518736452. The cubic root of 1983455 is about 125.6437193131.

The spelling of 1983455 in words is "one million, nine hundred eighty-three thousand, four hundred fifty-five".