2069409039749 has 2 divisors, whose sum is σ = 2069409039750. Its totient is φ = 2069409039748.

The previous prime is 2069409039683. The next prime is 2069409039751. The reversal of 2069409039749 is 9479309049602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1553587744900 + 515821294849 = 1246430^2 + 718207^2 .

It is a cyclic number.

It is not a de Polignac number, because 2069409039749 - 2⁸ = 2069409039493 is a prime.

Together with 2069409039751, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2069409039691 and 2069409039700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2069409033749) 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, 1034704519874 + 1034704519875.

It is an arithmetic number, because the mean of its divisors is an integer number (1034704519875).

Almost surely, 2^{2069409039749} is an apocalyptic number.

It is an amenable number.

2069409039749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2069409039749 is an equidigital number, since it uses as much as digits as its factorization.

2069409039749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26453952, while the sum is 62.

The spelling of 2069409039749 in words is "two trillion, sixty-nine billion, four hundred nine million, thirty-nine thousand, seven hundred forty-nine".