4009859857769 has 2 divisors, whose sum is σ = 4009859857770. Its totient is φ = 4009859857768.

The previous prime is 4009859857741. The next prime is 4009859857877. The reversal of 4009859857769 is 9677589589004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2260557355225 + 1749302502544 = 1503515^2 + 1322612^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4009859857769 is a prime.

It is a super-2 number, since 2×4009859857769² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4009859857769.

It is not a weakly prime, because it can be changed into another prime (4009859857469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2004929928884 + 2004929928885.

It is an arithmetic number, because the mean of its divisors is an integer number (2004929928885).

Almost surely, 2^{4009859857769} is an apocalyptic number.

It is an amenable number.

4009859857769 is a deficient number, since it is larger than the sum of its proper divisors (1).

4009859857769 is an equidigital number, since it uses as much as digits as its factorization.

4009859857769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1371686400, while the sum is 77.

The spelling of 4009859857769 in words is "four trillion, nine billion, eight hundred fifty-nine million, eight hundred fifty-seven thousand, seven hundred sixty-nine".