5406939689 has 2 divisors, whose sum is σ = 5406939690. Its totient is φ = 5406939688.

The previous prime is 5406939673. The next prime is 5406939721. The reversal of 5406939689 is 9869396045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5404749289 + 2190400 = 73517^2 + 1480^2 .

It is a cyclic number.

It is not a de Polignac number, because 5406939689 - 2⁴ = 5406939673 is a prime.

It is not a weakly prime, because it can be changed into another prime (5406939619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2703469844 + 2703469845.

It is an arithmetic number, because the mean of its divisors is an integer number (2703469845).

Almost surely, 2^5406939689 is an apocalyptic number.

It is an amenable number.

5406939689 is a deficient number, since it is larger than the sum of its proper divisors (1).

5406939689 is an equidigital number, since it uses as much as digits as its factorization.

5406939689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12597120, while the sum is 59.

The square root of 5406939689 is about 73531.8957255965. The cubic root of 5406939689 is about 1755.1618683880.

The spelling of 5406939689 in words is "five billion, four hundred six million, nine hundred thirty-nine thousand, six hundred eighty-nine".