7189649 has 2 divisors, whose sum is σ = 7189650. Its totient is φ = 7189648.

The previous prime is 7189627. The next prime is 7189661. The reversal of 7189649 is 9469817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4231249 + 2958400 = 2057^2 + 1720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7189649 is a prime.

It is a nialpdrome in base 8.

It is not a weakly prime, because it can be changed into another prime (7189669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3594824 + 3594825.

It is an arithmetic number, because the mean of its divisors is an integer number (3594825).

Almost surely, 2^7189649 is an apocalyptic number.

It is an amenable number.

7189649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7189649 is an equidigital number, since it uses as much as digits as its factorization.

7189649 is an evil number, because the sum of its binary digits is even.

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

The square root of 7189649 is about 2681.3520843037. The cubic root of 7189649 is about 193.0052975360.

The spelling of 7189649 in words is "seven million, one hundred eighty-nine thousand, six hundred forty-nine".