2905869 has 16 divisors (see below), whose sum is σ = 4071168. Its totient is φ = 1841472.

The previous prime is 2905867. The next prime is 2905891. The reversal of 2905869 is 9685092.

It is a happy number.

2905869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2905869 - 2¹ = 2905867 is a prime.

It is a super-2 number, since 2×2905869² = 16888149290322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2905867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4939 + ... + 5495.

It is an arithmetic number, because the mean of its divisors is an integer number (254448).

2^2905869 is an apocalyptic number.

It is an amenable number.

2905869 is a deficient number, since it is larger than the sum of its proper divisors (1165299).

2905869 is a wasteful number, since it uses less digits than its factorization.

2905869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 2905869 is about 1704.6609633590. The cubic root of 2905869 is about 142.7004504333.

It can be divided in two parts, 29058 and 69, that multiplied together give a palindrome (2005002).

The spelling of 2905869 in words is "two million, nine hundred five thousand, eight hundred sixty-nine".