3898836 has 18 divisors (see below), whose sum is σ = 9855482. Its totient is φ = 1299600.

The previous prime is 3898771. The next prime is 3898841. The reversal of 3898836 is 6388983.

It can be written as a sum of positive squares in only one way, i.e., 3825936 + 72900 = 1956^2 + 270^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 3898791 and 3898800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54115 + ... + 54186.

Almost surely, 2^3898836 is an apocalyptic number.

3898836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3898836 is an abundant number, since it is smaller than the sum of its proper divisors (5956646).

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

3898836 is a wasteful number, since it uses less digits than its factorization.

3898836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108311 (or 108306 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 3898836 is about 1974.5470366644. The cubic root of 3898836 is about 157.3904302168.

The spelling of 3898836 in words is "three million, eight hundred ninety-eight thousand, eight hundred thirty-six".