3897609169 has 2 divisors, whose sum is σ = 3897609170. Its totient is φ = 3897609168.

The previous prime is 3897609167. The next prime is 3897609197. The reversal of 3897609169 is 9619067983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2718579600 + 1179029569 = 52140^2 + 34337^2 .

It is a cyclic number.

It is not a de Polignac number, because 3897609169 - 2¹ = 3897609167 is a prime.

It is a super-2 number, since 2×3897609169² = 30382714468545741122, which contains 22 as substring.

Together with 3897609167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3897609167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1948804584 + 1948804585.

It is an arithmetic number, because the mean of its divisors is an integer number (1948804585).

Almost surely, 2^3897609169 is an apocalyptic number.

It is an amenable number.

3897609169 is a deficient number, since it is larger than the sum of its proper divisors (1).

3897609169 is an equidigital number, since it uses as much as digits as its factorization.

3897609169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The square root of 3897609169 is about 62430.8350817126. The cubic root of 3897609169 is about 1573.7392001434.

The spelling of 3897609169 in words is "three billion, eight hundred ninety-seven million, six hundred nine thousand, one hundred sixty-nine".