5423989 has 2 divisors, whose sum is σ = 5423990. Its totient is φ = 5423988.

The previous prime is 5423983. The next prime is 5424011. The reversal of 5423989 is 9893245.

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., 5130225 + 293764 = 2265^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 5423989 - 2³ = 5423981 is a prime.

It is a Chen prime.

5423989 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5423981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2711994 + 2711995.

It is an arithmetic number, because the mean of its divisors is an integer number (2711995).

Almost surely, 2^5423989 is an apocalyptic number.

It is an amenable number.

5423989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5423989 is an equidigital number, since it uses as much as digits as its factorization.

5423989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 5423989 is about 2328.9458988993. The cubic root of 5423989 is about 175.7004740977.

The spelling of 5423989 in words is "five million, four hundred twenty-three thousand, nine hundred eighty-nine".