2397985 has 8 divisors (see below), whose sum is σ = 2932200. Its totient is φ = 1881984.

The previous prime is 2397961. The next prime is 2397991. The reversal of 2397985 is 5897932.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 802816 + 1595169 = 896^2 + 1263^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2397985 - 2¹⁵ = 2365217 is a prime.

2397985 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4260 + ... + 4789.

It is an arithmetic number, because the mean of its divisors is an integer number (366525).

2^2397985 is an apocalyptic number.

It is an amenable number.

2397985 is a deficient number, since it is larger than the sum of its proper divisors (534215).

2397985 is an equidigital number, since it uses as much as digits as its factorization.

2397985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9107.

The product of its digits is 136080, while the sum is 43.

The square root of 2397985 is about 1548.5428634688. The cubic root of 2397985 is about 133.8491098754.

The spelling of 2397985 in words is "two million, three hundred ninety-seven thousand, nine hundred eighty-five".