39896069 has 2 divisors, whose sum is σ = 39896070. Its totient is φ = 39896068.

The previous prime is 39896047. The next prime is 39896081. The reversal of 39896069 is 96069893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39062500 + 833569 = 6250^2 + 913^2 .

It is a cyclic number.

It is not a de Polignac number, because 39896069 - 2⁸ = 39895813 is a prime.

It is a super-2 number, since 2×39896069² = 3183392643305522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39896089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19948034 + 19948035.

It is an arithmetic number, because the mean of its divisors is an integer number (19948035).

Almost surely, 2^39896069 is an apocalyptic number.

It is an amenable number.

39896069 is a deficient number, since it is larger than the sum of its proper divisors (1).

39896069 is an equidigital number, since it uses as much as digits as its factorization.

39896069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 39896069 is about 6316.3335092441. Note that the first 3 decimals coincide. The cubic root of 39896069 is about 341.6987332452.

The spelling of 39896069 in words is "thirty-nine million, eight hundred ninety-six thousand, sixty-nine".