2398421869 has 4 divisors (see below), whose sum is σ = 2403558144. Its totient is φ = 2393285596.

The previous prime is 2398421827. The next prime is 2398421957. The reversal of 2398421869 is 9681248932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2398421869 - 2³¹ = 250938221 is a prime.

It is a super-2 number, since 2×2398421869² = 11504854923394906322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2398421969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2567437 + ... + 2568370.

It is an arithmetic number, because the mean of its divisors is an integer number (600889536).

Almost surely, 2^2398421869 is an apocalyptic number.

It is an amenable number.

2398421869 is a deficient number, since it is larger than the sum of its proper divisors (5136275).

2398421869 is an equidigital number, since it uses as much as digits as its factorization.

2398421869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5136274.

The product of its digits is 1492992, while the sum is 52.

The square root of 2398421869 is about 48973.6854749569. The cubic root of 2398421869 is about 1338.5723766827.

The spelling of 2398421869 in words is "two billion, three hundred ninety-eight million, four hundred twenty-one thousand, eight hundred sixty-nine".