2397999 has 4 divisors (see below), whose sum is σ = 3197336. Its totient is φ = 1598664.

The previous prime is 2397991. The next prime is 2398001. The reversal of 2397999 is 9997932.

It is a happy number.

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

It is not a de Polignac number, because 2397999 - 2³ = 2397991 is a prime.

It is a D-number.

It is a Duffinian 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399664 + ... + 399669.

It is an arithmetic number, because the mean of its divisors is an integer number (799334).

2^2397999 is an apocalyptic number.

2397999 is a deficient number, since it is larger than the sum of its proper divisors (799337).

2397999 is an equidigital number, since it uses as much as digits as its factorization.

2397999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799336.

The product of its digits is 275562, while the sum is 48.

The square root of 2397999 is about 1548.5473838407. The cubic root of 2397999 is about 133.8493703557.

The spelling of 2397999 in words is "two million, three hundred ninety-seven thousand, nine hundred ninety-nine".