3940173869 has 2 divisors, whose sum is σ = 3940173870. Its totient is φ = 3940173868.

The previous prime is 3940173833. The next prime is 3940173947. The reversal of 3940173869 is 9683710493.

3940173869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3766276900 + 173896969 = 61370^2 + 13187^2 .

It is a cyclic number.

It is not a de Polignac number, because 3940173869 - 2¹² = 3940169773 is a prime.

It is a super-2 number, since 2×3940173869² = 31049940235900858322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3940173569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970086934 + 1970086935.

It is an arithmetic number, because the mean of its divisors is an integer number (1970086935).

Almost surely, 2^3940173869 is an apocalyptic number.

It is an amenable number.

3940173869 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940173869 is an equidigital number, since it uses as much as digits as its factorization.

3940173869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 3940173869 is about 62770.8042723685. The cubic root of 3940173869 is about 1579.4472601877.

The spelling of 3940173869 in words is "three billion, nine hundred forty million, one hundred seventy-three thousand, eight hundred sixty-nine".