3898819 has 4 divisors (see below), whose sum is σ = 4104040. Its totient is φ = 3693600.

The previous prime is 3898771. The next prime is 3898841. The reversal of 3898819 is 9188983.

3898819 = T₃₄₁ + T₃₄₂ + ... + T₃₉₇.

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

It is a de Polignac number, because none of the positive numbers 2^k-3898819 is a prime.

It is a super-2 number, since 2×3898819² = 30401579189522, which contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102582 + ... + 102619.

It is an arithmetic number, because the mean of its divisors is an integer number (1026010).

Almost surely, 2^3898819 is an apocalyptic number.

3898819 is a deficient number, since it is larger than the sum of its proper divisors (205221).

3898819 is a wasteful number, since it uses less digits than its factorization.

3898819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205220.

The product of its digits is 124416, while the sum is 46.

The square root of 3898819 is about 1974.5427318749. The cubic root of 3898819 is about 157.3902014613.

The spelling of 3898819 in words is "three million, eight hundred ninety-eight thousand, eight hundred nineteen".