3905538 has 64 divisors (see below), whose sum is σ = 10063872. Its totient is φ = 982080.

The previous prime is 3905533. The next prime is 3905543. The reversal of 3905538 is 8355093.

It is an interprime number because it is at equal distance from previous prime (3905533) and next prime (3905543).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3905499 and 3905508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3905533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12403 + ... + 12713.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

Almost surely, 2^3905538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3905538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5031936).

3905538 is an abundant number, since it is smaller than the sum of its proper divisors (6158334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3905538 is a wasteful number, since it uses less digits than its factorization.

3905538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 3905538 is about 1976.2434060611. The cubic root of 3905538 is about 157.4805619750.

It can be divided in two parts, 39055 and 38, that added together give a palindrome (39093).

The spelling of 3905538 in words is "three million, nine hundred five thousand, five hundred thirty-eight".