7113989 has 2 divisors, whose sum is σ = 7113990. Its totient is φ = 7113988.

The previous prime is 7113983. The next prime is 7114039. The reversal of 7113989 is 9893117.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5313025 + 1800964 = 2305^2 + 1342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7113989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7113983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3556994 + 3556995.

It is an arithmetic number, because the mean of its divisors is an integer number (3556995).

Almost surely, 2^7113989 is an apocalyptic number.

It is an amenable number.

7113989 is a deficient number, since it is larger than the sum of its proper divisors (1).

7113989 is an equidigital number, since it uses as much as digits as its factorization.

7113989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 38.

The square root of 7113989 is about 2667.2062162495. The cubic root of 7113989 is about 192.3258806715.

The spelling of 7113989 in words is "seven million, one hundred thirteen thousand, nine hundred eighty-nine".