3898047 has 4 divisors (see below), whose sum is σ = 5197400. Its totient is φ = 2598696.

The previous prime is 3898043. The next prime is 3898057. The reversal of 3898047 is 7408983.

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

It is not a de Polignac number, because 3898047 - 2² = 3898043 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3897996 and 3898014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898043) 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, 649672 + ... + 649677.

It is an arithmetic number, because the mean of its divisors is an integer number (1299350).

Almost surely, 2^3898047 is an apocalyptic number.

3898047 is a deficient number, since it is larger than the sum of its proper divisors (1299353).

3898047 is a wasteful number, since it uses less digits than its factorization.

3898047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299352.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 3898047 is about 1974.3472338978. The cubic root of 3898047 is about 157.3798125669.

The spelling of 3898047 in words is "three million, eight hundred ninety-eight thousand, forty-seven".