4055869 has 4 divisors (see below), whose sum is σ = 4059900. Its totient is φ = 4051840.

The previous prime is 4055851. The next prime is 4055893. The reversal of 4055869 is 9685504.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2442969 + 1612900 = 1563^2 + 1270^2 .

It is a cyclic number.

It is not a de Polignac number, because 4055869 - 2⁹ = 4055357 is a prime.

It is a super-2 number, since 2×4055869² = 32900146690322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4055839) 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, 909 + ... + 2989.

It is an arithmetic number, because the mean of its divisors is an integer number (1014975).

Almost surely, 2^4055869 is an apocalyptic number.

It is an amenable number.

4055869 is a deficient number, since it is larger than the sum of its proper divisors (4031).

4055869 is a wasteful number, since it uses less digits than its factorization.

4055869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 4055869 is about 2013.9188166359. The cubic root of 4055869 is about 159.4757450433.

The spelling of 4055869 in words is "four million, fifty-five thousand, eight hundred sixty-nine".