5409243989 has 2 divisors, whose sum is σ = 5409243990. Its totient is φ = 5409243988.

The previous prime is 5409243979. The next prime is 5409244019. The reversal of 5409243989 is 9893429045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5379048964 + 30195025 = 73342^2 + 5495^2 .

It is a cyclic number.

It is not a de Polignac number, because 5409243989 - 2⁸ = 5409243733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5409243989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5409243929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2704621994 + 2704621995.

It is an arithmetic number, because the mean of its divisors is an integer number (2704621995).

Almost surely, 2^5409243989 is an apocalyptic number.

It is an amenable number.

5409243989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5409243989 is an equidigital number, since it uses as much as digits as its factorization.

5409243989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The square root of 5409243989 is about 73547.5627672325. The cubic root of 5409243989 is about 1755.4111680732.

The spelling of 5409243989 in words is "five billion, four hundred nine million, two hundred forty-three thousand, nine hundred eighty-nine".