5640539269 has 2 divisors, whose sum is σ = 5640539270. Its totient is φ = 5640539268.

The previous prime is 5640539239. The next prime is 5640539323. The reversal of 5640539269 is 9629350465.

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., 4524311169 + 1116228100 = 67263^2 + 33410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5640539269 is a prime.

It is a super-2 number, since 2×5640539269² = 63631366490262108722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5640539239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820269634 + 2820269635.

It is an arithmetic number, because the mean of its divisors is an integer number (2820269635).

Almost surely, 2^5640539269 is an apocalyptic number.

It is an amenable number.

5640539269 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640539269 is an equidigital number, since it uses as much as digits as its factorization.

5640539269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The square root of 5640539269 is about 75103.5236789859. The cubic root of 5640539269 is about 1780.0828212316.

The spelling of 5640539269 in words is "five billion, six hundred forty million, five hundred thirty-nine thousand, two hundred sixty-nine".