6458989 has 2 divisors, whose sum is σ = 6458990. Its totient is φ = 6458988.

The previous prime is 6458981. The next prime is 6459029. The reversal of 6458989 is 9898546.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3736489 + 2722500 = 1933^2 + 1650^2 .

It is a cyclic number.

It is not a de Polignac number, because 6458989 - 2³ = 6458981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6458981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3229494 + 3229495.

It is an arithmetic number, because the mean of its divisors is an integer number (3229495).

Almost surely, 2^6458989 is an apocalyptic number.

It is an amenable number.

6458989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6458989 is an equidigital number, since it uses as much as digits as its factorization.

6458989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The square root of 6458989 is about 2541.4541113308. The cubic root of 6458989 is about 186.2322319882.

It can be divided in two parts, 6458 and 989, that added together give a palindrome (7447).

The spelling of 6458989 in words is "six million, four hundred fifty-eight thousand, nine hundred eighty-nine".