5431949989 has 2 divisors, whose sum is σ = 5431949990. Its totient is φ = 5431949988.

The previous prime is 5431949959. The next prime is 5431950001. The reversal of 5431949989 is 9899491345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5400780100 + 31169889 = 73490^2 + 5583^2 .

It is a cyclic number.

It is not a de Polignac number, because 5431949989 - 2²⁵ = 5398395557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5431949959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2715974994 + 2715974995.

It is an arithmetic number, because the mean of its divisors is an integer number (2715974995).

Almost surely, 2^5431949989 is an apocalyptic number.

It is an amenable number.

5431949989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5431949989 is an equidigital number, since it uses as much as digits as its factorization.

5431949989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12597120, while the sum is 61.

The square root of 5431949989 is about 73701.7638120011. The cubic root of 5431949989 is about 1757.8639276791.

The spelling of 5431949989 in words is "five billion, four hundred thirty-one million, nine hundred forty-nine thousand, nine hundred eighty-nine".