3940169 has 4 divisors (see below), whose sum is σ = 3948420. Its totient is φ = 3931920.

The previous prime is 3940159. The next prime is 3940171. The reversal of 3940169 is 9610493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9610493 = 683 ⋅14071.

It can be written as a sum of positive squares in 2 ways, for example, as 2016400 + 1923769 = 1420^2 + 1387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3940169 is a prime.

It is a super-2 number, since 2×3940169² = 31049863497122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3940159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3362 + ... + 4379.

It is an arithmetic number, because the mean of its divisors is an integer number (987105).

Almost surely, 2^3940169 is an apocalyptic number.

It is an amenable number.

3940169 is a deficient number, since it is larger than the sum of its proper divisors (8251).

3940169 is an equidigital number, since it uses as much as digits as its factorization.

3940169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8250.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 3940169 is about 1984.9858941564. The cubic root of 3940169 is about 157.9446609596.

The spelling of 3940169 in words is "three million, nine hundred forty thousand, one hundred sixty-nine".