3898847 has 4 divisors (see below), whose sum is σ = 4033320. Its totient is φ = 3764376.

The previous prime is 3898841. The next prime is 3898871. The reversal of 3898847 is 7488983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7488983 = 19 ⋅394157.

It is a cyclic number.

It is not a de Polignac number, because 3898847 - 2¹⁰ = 3897823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898841) 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, 67193 + ... + 67250.

It is an arithmetic number, because the mean of its divisors is an integer number (1008330).

Almost surely, 2^3898847 is an apocalyptic number.

3898847 is a deficient number, since it is larger than the sum of its proper divisors (134473).

3898847 is a wasteful number, since it uses less digits than its factorization.

3898847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134472.

The product of its digits is 387072, while the sum is 47.

The square root of 3898847 is about 1974.5498221114. The cubic root of 3898847 is about 157.3905782348.

The spelling of 3898847 in words is "three million, eight hundred ninety-eight thousand, eight hundred forty-seven".