2398885 has 4 divisors (see below), whose sum is σ = 2878668. Its totient is φ = 1919104.

The previous prime is 2398867. The next prime is 2398889. The reversal of 2398885 is 5888932.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1442401 + 956484 = 1201^2 + 978^2 .

It is a cyclic number.

It is not a de Polignac number, because 2398885 - 2¹⁷ = 2267813 is a prime.

It is a d-powerful number, because it can be written as 2¹⁶ + 3¹¹ + 9⁴ + 8⁴ + 8⁵ + 8⁷ + 5⁶ .

It is a Duffinian number.

2398885 is a lucky number.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2398889) 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, 239884 + ... + 239893.

It is an arithmetic number, because the mean of its divisors is an integer number (719667).

2^2398885 is an apocalyptic number.

It is an amenable number.

2398885 is a deficient number, since it is larger than the sum of its proper divisors (479783).

2398885 is an equidigital number, since it uses as much as digits as its factorization.

2398885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479782.

The product of its digits is 138240, while the sum is 43.

The square root of 2398885 is about 1548.8334319739. The cubic root of 2398885 is about 133.8658529786.

The spelling of 2398885 in words is "two million, three hundred ninety-eight thousand, eight hundred eighty-five".