2397998 has 4 divisors (see below), whose sum is σ = 3597000. Its totient is φ = 1198998.

The previous prime is 2397991. The next prime is 2398001. The reversal of 2397998 is 8997932.

2397998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2397991) by changing a digit.

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, 599498 + ... + 599501.

It is an arithmetic number, because the mean of its divisors is an integer number (899250).

2^2397998 is an apocalyptic number.

2397998 is a deficient number, since it is larger than the sum of its proper divisors (1199002).

2397998 is a wasteful number, since it uses less digits than its factorization.

2397998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199001.

The product of its digits is 244944, while the sum is 47.

The square root of 2397998 is about 1548.5470609575. The cubic root of 2397998 is about 133.8493517500.

The spelling of 2397998 in words is "two million, three hundred ninety-seven thousand, nine hundred ninety-eight".