3967569 has 16 divisors (see below), whose sum is σ = 6134400. Its totient is φ = 2529648.

The previous prime is 3967553. The next prime is 3967571. The reversal of 3967569 is 9657693.

It is not a de Polignac number, because 3967569 - 2⁴ = 3967553 is a prime.

It is a super-2 number, since 2×3967569² = 31483207539522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2574 + ... + 3815.

It is an arithmetic number, because the mean of its divisors is an integer number (383400).

Almost surely, 2^3967569 is an apocalyptic number.

It is an amenable number.

3967569 is a deficient number, since it is larger than the sum of its proper divisors (2166831).

3967569 is a wasteful number, since it uses less digits than its factorization.

3967569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6421 (or 6415 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 3967569 is about 1991.8757491370. The cubic root of 3967569 is about 158.3099321525.

The spelling of 3967569 in words is "three million, nine hundred sixty-seven thousand, five hundred sixty-nine".