3906169 has 2 divisors, whose sum is σ = 3906170. Its totient is φ = 3906168.

The previous prime is 3906151. The next prime is 3906173. The reversal of 3906169 is 9616093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3861225 + 44944 = 1965^2 + 212^2 .

It is a cyclic number.

It is not a de Polignac number, because 3906169 - 2⁵ = 3906137 is a prime.

It is a super-2 number, since 2×3906169² = 30516312513122, which contains 22 as substring.

3906169 is a lucky number.

It is equal to p₂₇₆₉₉₁ and since 3906169 and 276991 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3906109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1953084 + 1953085.

It is an arithmetic number, because the mean of its divisors is an integer number (1953085).

Almost surely, 2^3906169 is an apocalyptic number.

It is an amenable number.

3906169 is a deficient number, since it is larger than the sum of its proper divisors (1).

3906169 is an equidigital number, since it uses as much as digits as its factorization.

3906169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 3906169 is about 1976.4030459398. The cubic root of 3906169 is about 157.4890426575.

It can be divided in two parts, 390616 and 9, that added together give a 8-th power (390625 = 5⁸).

The spelling of 3906169 in words is "three million, nine hundred six thousand, one hundred sixty-nine".