2235869 has 2 divisors, whose sum is σ = 2235870. Its totient is φ = 2235868.

The previous prime is 2235859. The next prime is 2235887. The reversal of 2235869 is 9685322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2044900 + 190969 = 1430^2 + 437^2 .

It is a cyclic number.

It is not a de Polignac number, because 2235869 - 2¹² = 2231773 is a prime.

It is a super-2 number, since 2×2235869² = 9998220370322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 2¹⁴ + 2¹⁸ + 3 + 5⁹ + 8⁴ + 6² + 9² .

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2235809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1117934 + 1117935.

It is an arithmetic number, because the mean of its divisors is an integer number (1117935).

2^2235869 is an apocalyptic number.

It is an amenable number.

2235869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2235869 is an equidigital number, since it uses as much as digits as its factorization.

2235869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 2235869 is about 1495.2822476041. The cubic root of 2235869 is about 130.7621697279.

The spelling of 2235869 in words is "two million, two hundred thirty-five thousand, eight hundred sixty-nine".