6432889 has 2 divisors, whose sum is σ = 6432890. Its totient is φ = 6432888.

The previous prime is 6432869. The next prime is 6432901. The reversal of 6432889 is 9882346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3515625 + 2917264 = 1875^2 + 1708^2 .

It is a cyclic number.

It is not a de Polignac number, because 6432889 - 2¹¹ = 6430841 is a prime.

6432889 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6432869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3216444 + 3216445.

It is an arithmetic number, because the mean of its divisors is an integer number (3216445).

Almost surely, 2^6432889 is an apocalyptic number.

It is an amenable number.

6432889 is a deficient number, since it is larger than the sum of its proper divisors (1).

6432889 is an equidigital number, since it uses as much as digits as its factorization.

6432889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 6432889 is about 2536.3140578406. The cubic root of 6432889 is about 185.9810459739.

The spelling of 6432889 in words is "six million, four hundred thirty-two thousand, eight hundred eighty-nine".