3898813 has 4 divisors (see below), whose sum is σ = 3993948. Its totient is φ = 3803680.

The previous prime is 3898771. The next prime is 3898841. The reversal of 3898813 is 3188983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127449 + 3771364 = 357^2 + 1942^2 .

It is a cyclic number.

It is not a de Polignac number, because 3898813 - 2¹⁷ = 3767741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898513) 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 3 ways as a sum of consecutive naturals, for example, 47506 + ... + 47587.

It is an arithmetic number, because the mean of its divisors is an integer number (998487).

Almost surely, 2^3898813 is an apocalyptic number.

It is an amenable number.

3898813 is a deficient number, since it is larger than the sum of its proper divisors (95135).

3898813 is an equidigital number, since it uses as much as digits as its factorization.

3898813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95134.

The product of its digits is 41472, while the sum is 40.

The square root of 3898813 is about 1974.5412125352. The cubic root of 3898813 is about 157.3901207239.

The spelling of 3898813 in words is "three million, eight hundred ninety-eight thousand, eight hundred thirteen".