39804694469 has 2 divisors, whose sum is σ = 39804694470. Its totient is φ = 39804694468.

The previous prime is 39804694417. The next prime is 39804694481. The reversal of 39804694469 is 96449640893.

39804694469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35649216100 + 4155478369 = 188810^2 + 64463^2 .

It is a cyclic number.

It is not a de Polignac number, because 39804694469 - 2⁸ = 39804694213 is a prime.

It is a super-2 number, since 2×39804694469² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39804634469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19902347234 + 19902347235.

It is an arithmetic number, because the mean of its divisors is an integer number (19902347235).

Almost surely, 2^39804694469 is an apocalyptic number.

It is an amenable number.

39804694469 is a deficient number, since it is larger than the sum of its proper divisors (1).

39804694469 is an equidigital number, since it uses as much as digits as its factorization.

39804694469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40310784, while the sum is 62.

The spelling of 39804694469 in words is "thirty-nine billion, eight hundred four million, six hundred ninety-four thousand, four hundred sixty-nine".