3898839 has 32 divisors (see below), whose sum is σ = 6303744. Its totient is φ = 2096640.

The previous prime is 3898771. The next prime is 3898841. The reversal of 3898839 is 9388983.

3898839 = T₇ + T₈ + ... + T₂₈₅.

It is a de Polignac number, because none of the positive numbers 2^k-3898839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34447 + ... + 34559.

It is an arithmetic number, because the mean of its divisors is an integer number (196992).

Almost surely, 2^3898839 is an apocalyptic number.

3898839 is a deficient number, since it is larger than the sum of its proper divisors (2404905).

3898839 is a wasteful number, since it uses less digits than its factorization.

3898839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207.

The product of its digits is 373248, while the sum is 48.

The square root of 3898839 is about 1974.5477963321. The cubic root of 3898839 is about 157.3904705854.

The spelling of 3898839 in words is "three million, eight hundred ninety-eight thousand, eight hundred thirty-nine".