7916489 has 6 divisors (see below), whose sum is σ = 9209034. Its totient is φ = 6785520.

The previous prime is 7916473. The next prime is 7916533. The reversal of 7916489 is 9846197.

It can be written as a sum of positive squares in only one way, i.e., 7075600 + 840889 = 2660^2 + 917^2 .

It is not a de Polignac number, because 7916489 - 2⁴ = 7916473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7916459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80732 + ... + 80829.

It is an arithmetic number, because the mean of its divisors is an integer number (1534839).

Almost surely, 2^7916489 is an apocalyptic number.

It is an amenable number.

7916489 is a deficient number, since it is larger than the sum of its proper divisors (1292545).

7916489 is a wasteful number, since it uses less digits than its factorization.

7916489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161575 (or 161568 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 7916489 is about 2813.6255969834. The cubic root of 7916489 is about 199.3016393000.

The spelling of 7916489 in words is "seven million, nine hundred sixteen thousand, four hundred eighty-nine".