1983387 has 8 divisors (see below), whose sum is σ = 3022336. Its totient is φ = 1133352.

The previous prime is 1983383. The next prime is 1983389. The reversal of 1983387 is 7833891.

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

It is not a de Polignac number, because 1983387 - 2² = 1983383 is a prime.

It is a Duffinian number.

1983387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1983383) 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, 47203 + ... + 47244.

It is an arithmetic number, because the mean of its divisors is an integer number (377792).

2^1983387 is an apocalyptic number.

1983387 is a deficient number, since it is larger than the sum of its proper divisors (1038949).

1983387 is an equidigital number, since it uses as much as digits as its factorization.

1983387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94457.

The product of its digits is 36288, while the sum is 39.

The square root of 1983387 is about 1408.3277317443. The cubic root of 1983387 is about 125.6422834565.

The spelling of 1983387 in words is "one million, nine hundred eighty-three thousand, three hundred eighty-seven".