3965289 has 4 divisors (see below), whose sum is σ = 5287056. Its totient is φ = 2643524.

The previous prime is 3965231. The next prime is 3965309. The reversal of 3965289 is 9825693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3965289 - 2⁷ = 3965161 is a prime.

It is a D-number.

It is a Curzon number.

3965289 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3965289.

It is not an unprimeable number, because it can be changed into a prime (3965219) 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, 660879 + ... + 660884.

It is an arithmetic number, because the mean of its divisors is an integer number (1321764).

Almost surely, 2^3965289 is an apocalyptic number.

It is an amenable number.

3965289 is a deficient number, since it is larger than the sum of its proper divisors (1321767).

3965289 is a wasteful number, since it uses less digits than its factorization.

3965289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321766.

The product of its digits is 116640, while the sum is 42.

The square root of 3965289 is about 1991.3033420351. The cubic root of 3965289 is about 158.2796015892.

The spelling of 3965289 in words is "three million, nine hundred sixty-five thousand, two hundred eighty-nine".