7984489 has 4 divisors (see below), whose sum is σ = 8200324. Its totient is φ = 7768656.

The previous prime is 7984439. The next prime is 7984513. The reversal of 7984489 is 9844897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9844897 = 23 ⋅428039.

It can be written as a sum of positive squares in 2 ways, for example, as 6250000 + 1734489 = 2500^2 + 1317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7984489 is a prime.

It is a super-2 number, since 2×7984489² = 127504129182242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7984409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107862 + ... + 107935.

It is an arithmetic number, because the mean of its divisors is an integer number (2050081).

Almost surely, 2^7984489 is an apocalyptic number.

It is an amenable number.

7984489 is a deficient number, since it is larger than the sum of its proper divisors (215835).

7984489 is a wasteful number, since it uses less digits than its factorization.

7984489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215834.

The product of its digits is 580608, while the sum is 49.

The square root of 7984489 is about 2825.6838110447. The cubic root of 7984489 is about 199.8706580380.

The spelling of 7984489 in words is "seven million, nine hundred eighty-four thousand, four hundred eighty-nine".