3187969 has 2 divisors, whose sum is σ = 3187970. Its totient is φ = 3187968.

The previous prime is 3187967. The next prime is 3187973. The reversal of 3187969 is 9697813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2356225 + 831744 = 1535^2 + 912^2 .

It is a cyclic number.

It is not a de Polignac number, because 3187969 - 2¹ = 3187967 is a prime.

It is a super-2 number, since 2×3187969² = 20326292689922, which contains 22 as substring.

Together with 3187967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3187967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1593984 + 1593985.

It is an arithmetic number, because the mean of its divisors is an integer number (1593985).

Almost surely, 2^3187969 is an apocalyptic number.

It is an amenable number.

3187969 is a deficient number, since it is larger than the sum of its proper divisors (1).

3187969 is an equidigital number, since it uses as much as digits as its factorization.

3187969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 3187969 is about 1785.4884485765. The cubic root of 3187969 is about 147.1763505888.

The spelling of 3187969 in words is "three million, one hundred eighty-seven thousand, nine hundred sixty-nine".