7981983 has 10 divisors (see below), whose sum is σ = 11923824. Its totient is φ = 5321268.

The previous prime is 7981949. The next prime is 7981999. The reversal of 7981983 is 3891897.

It is not a de Polignac number, because 7981983 - 2⁹ = 7981471 is a prime.

It is a super-2 number, since 2×7981983² = 127424105224578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7981283) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 49191 + ... + 49352.

Almost surely, 2^7981983 is an apocalyptic number.

7981983 is a deficient number, since it is larger than the sum of its proper divisors (3941841).

7981983 is an equidigital number, since it uses as much as digits as its factorization.

7981983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98555 (or 98546 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 7981983 is about 2825.2403437584. The cubic root of 7981983 is about 199.8497454795.

The spelling of 7981983 in words is "seven million, nine hundred eighty-one thousand, nine hundred eighty-three".