3565949 has 4 divisors (see below), whose sum is σ = 3662364. Its totient is φ = 3469536.

The previous prime is 3565931. The next prime is 3565979. The reversal of 3565949 is 9495653.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2992900 + 573049 = 1730^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 3565949 - 2⁸ = 3565693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3565909) 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, 48152 + ... + 48225.

It is an arithmetic number, because the mean of its divisors is an integer number (915591).

Almost surely, 2^3565949 is an apocalyptic number.

It is an amenable number.

3565949 is a deficient number, since it is larger than the sum of its proper divisors (96415).

3565949 is an equidigital number, since it uses as much as digits as its factorization.

3565949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96414.

The product of its digits is 145800, while the sum is 41.

The square root of 3565949 is about 1888.3720502062. The cubic root of 3565949 is about 152.7771400475. Note that the first 3 decimals are identical.

The spelling of 3565949 in words is "three million, five hundred sixty-five thousand, nine hundred forty-nine".