4247998 has 4 divisors (see below), whose sum is σ = 6372000. Its totient is φ = 2123998.

The previous prime is 4247983. The next prime is 4248017. The reversal of 4247998 is 8997424.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061998 + ... + 1062001.

It is an arithmetic number, because the mean of its divisors is an integer number (1593000).

Almost surely, 2^4247998 is an apocalyptic number.

4247998 is a deficient number, since it is larger than the sum of its proper divisors (2124002).

4247998 is a wasteful number, since it uses less digits than its factorization.

4247998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124001.

The product of its digits is 145152, while the sum is 43.

The square root of 4247998 is about 2061.0671992926. The cubic root of 4247998 is about 161.9551519404.

The spelling of 4247998 in words is "four million, two hundred forty-seven thousand, nine hundred ninety-eight".